./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.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_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/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_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/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_06e8cd5a-837d-49e2-9268-acf1ff4d89af/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 b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:28:12,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:28:12,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:28:12,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:28:12,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:28:12,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:28:12,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:28:12,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:28:12,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:28:12,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:28:12,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:28:12,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:28:12,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:28:12,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:28:12,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:28:12,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:28:12,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:28:12,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:28:12,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:28:12,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:28:12,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:28:12,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:28:12,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:28:12,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:28:12,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:28:12,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:28:12,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:28:12,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:28:12,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:28:12,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:28:12,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:28:12,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:28:12,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:28:12,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:28:12,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:28:12,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:28:12,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:28:12,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:28:12,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:28:12,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:28:12,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:28:12,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 15:28:12,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:28:12,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:28:12,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:28:12,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:28:12,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:28:12,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:28:12,205 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:28:12,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:28:12,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:28:12,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:28:12,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:28:12,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:28:12,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:28:12,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:28:12,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:28:12,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:28:12,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:28:12,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:28:12,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:28:12,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:28:12,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:28:12,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:28:12,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:28:12,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:28:12,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:28:12,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:28:12,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:28:12,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:28:12,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:28:12,213 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_06e8cd5a-837d-49e2-9268-acf1ff4d89af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-11-22 15:28:12,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:28:12,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:28:12,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:28:12,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:28:12,642 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:28:12,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-22 15:28:12,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/data/5cefa8fdb/4b242dec8aab4910acf836fbcb5bc20f/FLAGc76956511 [2021-11-22 15:28:13,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:28:13,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-22 15:28:13,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/data/5cefa8fdb/4b242dec8aab4910acf836fbcb5bc20f/FLAGc76956511 [2021-11-22 15:28:14,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/data/5cefa8fdb/4b242dec8aab4910acf836fbcb5bc20f [2021-11-22 15:28:14,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:28:14,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:28:14,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:28:14,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:28:14,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:28:14,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:28:14" (1/1) ... [2021-11-22 15:28:14,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efa064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:14, skipping insertion in model container [2021-11-22 15:28:14,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:28:14" (1/1) ... [2021-11-22 15:28:14,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:28:14,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:28:14,840 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-22 15:28:14,842 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-22 15:28:15,226 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_06e8cd5a-837d-49e2-9268-acf1ff4d89af/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-22 15:28:16,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:28:16,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:28:16,564 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-22 15:28:16,565 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-22 15:28:16,583 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_06e8cd5a-837d-49e2-9268-acf1ff4d89af/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-22 15:28:16,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:28:17,205 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:28:17,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17 WrapperNode [2021-11-22 15:28:17,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:28:17,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:28:17,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:28:17,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:28:17,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:17,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:21,754 INFO L137 Inliner]: procedures = 276, calls = 1927, calls flagged for inlining = 628, calls inlined = 12822, statements flattened = 118338 [2021-11-22 15:28:21,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:28:21,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:28:21,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:28:21,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:28:21,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:21,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:22,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:22,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:25,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:25,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:26,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:26,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:28:26,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:28:26,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:28:26,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:28:26,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (1/1) ... [2021-11-22 15:28:26,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:28:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:28:26,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:28:26,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:28:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 15:28:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 15:28:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:28:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:28:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:28:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:28:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 15:28:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 15:28:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:28:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:28:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:28:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:28:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:28:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 15:28:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 15:28:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-11-22 15:28:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-11-22 15:28:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:28:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:28:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:28:27,897 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:28:27,899 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:29:48,979 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:29:49,105 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:29:49,106 INFO L301 CfgBuilder]: Removed 66 assume(true) statements. [2021-11-22 15:29:49,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:49 BoogieIcfgContainer [2021-11-22 15:29:49,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:29:49,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:29:49,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:29:49,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:29:49,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:28:14" (1/3) ... [2021-11-22 15:29:49,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396838df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:29:49, skipping insertion in model container [2021-11-22 15:29:49,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:28:17" (2/3) ... [2021-11-22 15:29:49,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396838df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:29:49, skipping insertion in model container [2021-11-22 15:29:49,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:29:49" (3/3) ... [2021-11-22 15:29:49,142 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-22 15:29:49,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:29:49,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-22 15:29:49,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:29:49,339 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 15:29:49,341 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-22 15:29:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 20049 states, 19974 states have (on average 1.2445679383198158) internal successors, (24859), 20031 states have internal predecessors, (24859), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-22 15:29:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:29:49,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:49,768 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] [2021-11-22 15:29:49,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:29:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:49,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1949943529, now seen corresponding path program 1 times [2021-11-22 15:29:49,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:49,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990160270] [2021-11-22 15:29:49,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:49,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:50,699 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 15:29:50,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:50,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990160270] [2021-11-22 15:29:50,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990160270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:50,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:50,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:50,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293529729] [2021-11-22 15:29:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:50,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:29:50,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:50,851 INFO L87 Difference]: Start difference. First operand has 20049 states, 19974 states have (on average 1.2445679383198158) internal successors, (24859), 20031 states have internal predecessors, (24859), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:29:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:53,435 INFO L93 Difference]: Finished difference Result 58807 states and 73032 transitions. [2021-11-22 15:29:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:53,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-22 15:29:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:29:53,771 INFO L225 Difference]: With dead ends: 58807 [2021-11-22 15:29:53,772 INFO L226 Difference]: Without dead ends: 38369 [2021-11-22 15:29:53,866 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 15:29:53,874 INFO L933 BasicCegarLoop]: 24262 mSDtfsCounter, 23387 mSDsluCounter, 24196 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23387 SdHoareTripleChecker+Valid, 48458 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:29:53,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23387 Valid, 48458 Invalid, 29 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:29:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38369 states. [2021-11-22 15:29:55,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38369 to 38254. [2021-11-22 15:29:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38254 states, 38162 states have (on average 1.2240710654577853) internal successors, (46713), 38219 states have internal predecessors, (46713), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-22 15:29:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38254 states to 38254 states and 46777 transitions. [2021-11-22 15:29:56,086 INFO L78 Accepts]: Start accepts. Automaton has 38254 states and 46777 transitions. Word has length 23 [2021-11-22 15:29:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:29:56,089 INFO L470 AbstractCegarLoop]: Abstraction has 38254 states and 46777 transitions. [2021-11-22 15:29:56,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:29:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38254 states and 46777 transitions. [2021-11-22 15:29:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:29:56,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:29:56,104 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] [2021-11-22 15:29:56,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:29:56,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:29:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:29:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 661138932, now seen corresponding path program 1 times [2021-11-22 15:29:56,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:29:56,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959071508] [2021-11-22 15:29:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:29:56,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:29:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:29:56,378 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 15:29:56,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:29:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959071508] [2021-11-22 15:29:56,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959071508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:29:56,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:29:56,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:29:56,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030559222] [2021-11-22 15:29:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:29:56,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:29:56,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:29:56,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:29:56,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:29:56,385 INFO L87 Difference]: Start difference. First operand 38254 states and 46777 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:29:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:29:59,653 INFO L93 Difference]: Finished difference Result 112863 states and 137932 transitions. [2021-11-22 15:29:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:29:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-22 15:29:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:00,043 INFO L225 Difference]: With dead ends: 112863 [2021-11-22 15:30:00,044 INFO L226 Difference]: Without dead ends: 74628 [2021-11-22 15:30:00,150 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 15:30:00,152 INFO L933 BasicCegarLoop]: 24688 mSDtfsCounter, 22663 mSDsluCounter, 23799 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22663 SdHoareTripleChecker+Valid, 48487 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:00,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22663 Valid, 48487 Invalid, 32 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74628 states. [2021-11-22 15:30:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74628 to 74507. [2021-11-22 15:30:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74507 states, 74379 states have (on average 1.2231543849742534) internal successors, (90977), 74438 states have internal predecessors, (90977), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-22 15:30:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74507 states to 74507 states and 91105 transitions. [2021-11-22 15:30:03,406 INFO L78 Accepts]: Start accepts. Automaton has 74507 states and 91105 transitions. Word has length 23 [2021-11-22 15:30:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:03,416 INFO L470 AbstractCegarLoop]: Abstraction has 74507 states and 91105 transitions. [2021-11-22 15:30:03,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 15:30:03,417 INFO L276 IsEmpty]: Start isEmpty. Operand 74507 states and 91105 transitions. [2021-11-22 15:30:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 15:30:03,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:03,426 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] [2021-11-22 15:30:03,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:30:03,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:30:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2053668567, now seen corresponding path program 1 times [2021-11-22 15:30:03,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743696154] [2021-11-22 15:30:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:03,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 15:30:03,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:03,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743696154] [2021-11-22 15:30:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743696154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:03,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:03,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:03,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843646164] [2021-11-22 15:30:03,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:03,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:03,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:03,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:03,664 INFO L87 Difference]: Start difference. First operand 74507 states and 91105 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 15:30:06,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:06,508 INFO L93 Difference]: Finished difference Result 78309 states and 95882 transitions. [2021-11-22 15:30:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 48 [2021-11-22 15:30:06,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:06,789 INFO L225 Difference]: With dead ends: 78309 [2021-11-22 15:30:06,789 INFO L226 Difference]: Without dead ends: 78201 [2021-11-22 15:30:06,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:30:06,848 INFO L933 BasicCegarLoop]: 23703 mSDtfsCounter, 9251 mSDsluCounter, 15947 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9251 SdHoareTripleChecker+Valid, 39650 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:06,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9251 Valid, 39650 Invalid, 317 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:30:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78201 states. [2021-11-22 15:30:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78201 to 78201. [2021-11-22 15:30:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78201 states, 78121 states have (on average 1.222411387463038) internal successors, (95496), 78132 states have internal predecessors, (95496), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-22 15:30:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78201 states to 78201 states and 95624 transitions. [2021-11-22 15:30:10,682 INFO L78 Accepts]: Start accepts. Automaton has 78201 states and 95624 transitions. Word has length 48 [2021-11-22 15:30:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:10,683 INFO L470 AbstractCegarLoop]: Abstraction has 78201 states and 95624 transitions. [2021-11-22 15:30:10,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 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 15:30:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 78201 states and 95624 transitions. [2021-11-22 15:30:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:30:10,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:10,708 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:30:10,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:30:10,710 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:30:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1703687983, now seen corresponding path program 1 times [2021-11-22 15:30:10,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:10,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240234733] [2021-11-22 15:30:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:10,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:30:10,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:10,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240234733] [2021-11-22 15:30:10,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240234733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:10,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:10,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:10,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954894580] [2021-11-22 15:30:10,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:10,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:10,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:10,942 INFO L87 Difference]: Start difference. First operand 78201 states and 95624 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 15:30:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:13,661 INFO L93 Difference]: Finished difference Result 156387 states and 191232 transitions. [2021-11-22 15:30:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:13,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 60 [2021-11-22 15:30:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:13,926 INFO L225 Difference]: With dead ends: 156387 [2021-11-22 15:30:13,926 INFO L226 Difference]: Without dead ends: 78205 [2021-11-22 15:30:14,107 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 15:30:14,115 INFO L933 BasicCegarLoop]: 23756 mSDtfsCounter, 0 mSDsluCounter, 23751 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47507 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:14,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47507 Invalid, 6 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78205 states. [2021-11-22 15:30:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78205 to 78205. [2021-11-22 15:30:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78205 states, 78125 states have (on average 1.2224) internal successors, (95500), 78136 states have internal predecessors, (95500), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-22 15:30:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78205 states to 78205 states and 95628 transitions. [2021-11-22 15:30:17,333 INFO L78 Accepts]: Start accepts. Automaton has 78205 states and 95628 transitions. Word has length 60 [2021-11-22 15:30:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:17,334 INFO L470 AbstractCegarLoop]: Abstraction has 78205 states and 95628 transitions. [2021-11-22 15:30:17,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 15:30:17,335 INFO L276 IsEmpty]: Start isEmpty. Operand 78205 states and 95628 transitions. [2021-11-22 15:30:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:30:17,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:17,352 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:30:17,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:30:17,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:30:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash 894341357, now seen corresponding path program 1 times [2021-11-22 15:30:17,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:17,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740067701] [2021-11-22 15:30:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:17,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:30:17,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740067701] [2021-11-22 15:30:17,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740067701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:17,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:17,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:17,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157697403] [2021-11-22 15:30:17,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:17,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:17,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:17,623 INFO L87 Difference]: Start difference. First operand 78205 states and 95628 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 15:30:20,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:20,626 INFO L93 Difference]: Finished difference Result 156393 states and 191236 transitions. [2021-11-22 15:30:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:20,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 60 [2021-11-22 15:30:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:20,858 INFO L225 Difference]: With dead ends: 156393 [2021-11-22 15:30:20,859 INFO L226 Difference]: Without dead ends: 78207 [2021-11-22 15:30:20,987 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 15:30:20,988 INFO L933 BasicCegarLoop]: 23756 mSDtfsCounter, 0 mSDsluCounter, 23750 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47506 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:20,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47506 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78207 states. [2021-11-22 15:30:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78207 to 78207. [2021-11-22 15:30:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78207 states, 78127 states have (on average 1.2223943067057483) internal successors, (95502), 78138 states have internal predecessors, (95502), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-22 15:30:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78207 states to 78207 states and 95630 transitions. [2021-11-22 15:30:23,398 INFO L78 Accepts]: Start accepts. Automaton has 78207 states and 95630 transitions. Word has length 60 [2021-11-22 15:30:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:23,402 INFO L470 AbstractCegarLoop]: Abstraction has 78207 states and 95630 transitions. [2021-11-22 15:30:23,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 15:30:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 78207 states and 95630 transitions. [2021-11-22 15:30:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:30:23,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:23,436 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:30:23,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:30:23,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:30:23,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash 698020744, now seen corresponding path program 1 times [2021-11-22 15:30:23,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:23,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754780968] [2021-11-22 15:30:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:23,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:30:23,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:23,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754780968] [2021-11-22 15:30:23,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754780968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:23,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:30:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530518025] [2021-11-22 15:30:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:23,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:23,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:23,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:23,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:23,674 INFO L87 Difference]: Start difference. First operand 78207 states and 95630 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 15:30:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:26,647 INFO L93 Difference]: Finished difference Result 156411 states and 191264 transitions. [2021-11-22 15:30:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:30:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 62 [2021-11-22 15:30:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:26,846 INFO L225 Difference]: With dead ends: 156411 [2021-11-22 15:30:26,846 INFO L226 Difference]: Without dead ends: 78223 [2021-11-22 15:30:26,978 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 15:30:26,981 INFO L933 BasicCegarLoop]: 23754 mSDtfsCounter, 3 mSDsluCounter, 47502 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71256 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:26,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 71256 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:30:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78223 states. [2021-11-22 15:30:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78223 to 78219. [2021-11-22 15:30:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78219 states, 78139 states have (on average 1.2223601530605714) internal successors, (95514), 78150 states have internal predecessors, (95514), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-22 15:30:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78219 states to 78219 states and 95642 transitions. [2021-11-22 15:30:29,361 INFO L78 Accepts]: Start accepts. Automaton has 78219 states and 95642 transitions. Word has length 62 [2021-11-22 15:30:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:29,362 INFO L470 AbstractCegarLoop]: Abstraction has 78219 states and 95642 transitions. [2021-11-22 15:30:29,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 15:30:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 78219 states and 95642 transitions. [2021-11-22 15:30:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:30:29,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:29,384 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:30:29,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:30:29,384 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:30:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1296123962, now seen corresponding path program 1 times [2021-11-22 15:30:29,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:29,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363677248] [2021-11-22 15:30:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:29,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:29,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:30:29,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363677248] [2021-11-22 15:30:29,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363677248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:29,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:29,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:30:29,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804690002] [2021-11-22 15:30:29,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:29,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:30:29,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:30:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:30:29,609 INFO L87 Difference]: Start difference. First operand 78219 states and 95642 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 15:30:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:32,200 INFO L93 Difference]: Finished difference Result 156427 states and 191273 transitions. [2021-11-22 15:30:32,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:30:32,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 62 [2021-11-22 15:30:32,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:32,851 INFO L225 Difference]: With dead ends: 156427 [2021-11-22 15:30:32,851 INFO L226 Difference]: Without dead ends: 78222 [2021-11-22 15:30:32,940 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 15:30:32,941 INFO L933 BasicCegarLoop]: 23754 mSDtfsCounter, 0 mSDsluCounter, 23661 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47415 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:32,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47415 Invalid, 100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:30:33,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78222 states. [2021-11-22 15:30:34,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78222 to 78222. [2021-11-22 15:30:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78222 states, 78142 states have (on average 1.2223516162882957) internal successors, (95517), 78153 states have internal predecessors, (95517), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-22 15:30:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78222 states to 78222 states and 95645 transitions. [2021-11-22 15:30:34,837 INFO L78 Accepts]: Start accepts. Automaton has 78222 states and 95645 transitions. Word has length 62 [2021-11-22 15:30:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:34,837 INFO L470 AbstractCegarLoop]: Abstraction has 78222 states and 95645 transitions. [2021-11-22 15:30:34,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 15:30:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 78222 states and 95645 transitions. [2021-11-22 15:30:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 15:30:34,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:34,856 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 15:30:34,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:30:34,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-22 15:30:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1288072622, now seen corresponding path program 1 times [2021-11-22 15:30:34,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331732170] [2021-11-22 15:30:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:34,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 15:30:35,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:35,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331732170] [2021-11-22 15:30:35,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331732170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:30:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077896516] [2021-11-22 15:30:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:35,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:35,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:30:35,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:30:35,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e8cd5a-837d-49e2-9268-acf1ff4d89af/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:30:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:36,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1960 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 15:30:36,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:30:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:30:36,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:30:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 15:30:37,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077896516] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 15:30:37,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:30:37,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 9 [2021-11-22 15:30:37,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644284012] [2021-11-22 15:30:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:30:37,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:30:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:30:37,082 INFO L87 Difference]: Start difference. First operand 78222 states and 95645 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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)