./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ --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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:10:12,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:10:12,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:10:12,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:10:12,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:10:12,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:10:12,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:10:12,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:10:12,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:10:12,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:10:12,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:10:12,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:10:12,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:10:12,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:10:12,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:10:12,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:10:12,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:10:12,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:10:12,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:10:12,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:10:12,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:10:12,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:10:12,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:10:12,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:10:12,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:10:12,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:10:12,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:10:12,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:10:12,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:10:12,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:10:12,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:10:12,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:10:12,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:10:12,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:10:12,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:10:12,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:10:12,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:10:12,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:10:12,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:10:12,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:10:12,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:10:12,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:10:12,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:10:12,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:10:12,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:10:12,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:10:12,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:10:12,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:10:12,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:10:12,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:10:12,902 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:10:12,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:10:12,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:10:12,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:10:12,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:10:12,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:10:12,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:10:12,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:10:12,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:10:12,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:10:12,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:10:12,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:10:12,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:10:12,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:10:12,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:10:12,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:10:12,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:10:12,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:10:12,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:10:12,907 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:10:12,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:10:12,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:10:12,907 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_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2022-10-17 10:10:13,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:10:13,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:10:13,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:10:13,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:10:13,216 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:10:13,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-10-17 10:10:13,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/data/afa521aa3/f2b4fddbd03f4e35a23c6200a6cd7534/FLAG0505d7c30 [2022-10-17 10:10:14,271 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:10:14,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-10-17 10:10:14,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/data/afa521aa3/f2b4fddbd03f4e35a23c6200a6cd7534/FLAG0505d7c30 [2022-10-17 10:10:14,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/data/afa521aa3/f2b4fddbd03f4e35a23c6200a6cd7534 [2022-10-17 10:10:14,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:10:14,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:10:14,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:10:14,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:10:14,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:10:14,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:14" (1/1) ... [2022-10-17 10:10:14,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a921c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:14, skipping insertion in model container [2022-10-17 10:10:14,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:14" (1/1) ... [2022-10-17 10:10:14,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:10:14,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:10:16,803 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_79313d67-cd4b-4621-bec3-40f3de9d6d2e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2022-10-17 10:10:16,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:10:16,874 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:10:17,245 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_79313d67-cd4b-4621-bec3-40f3de9d6d2e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2022-10-17 10:10:17,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:10:17,314 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:10:17,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17 WrapperNode [2022-10-17 10:10:17,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:10:17,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:10:17,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:10:17,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:10:17,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,599 INFO L138 Inliner]: procedures = 228, calls = 2012, calls flagged for inlining = 106, calls inlined = 86, statements flattened = 2912 [2022-10-17 10:10:17,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:10:17,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:10:17,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:10:17,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:10:17,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:10:17,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:10:17,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:10:17,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:10:17,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (1/1) ... [2022-10-17 10:10:17,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:10:17,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:10:17,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:10:17,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79313d67-cd4b-4621-bec3-40f3de9d6d2e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:10:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2022-10-17 10:10:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2022-10-17 10:10:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692 [2022-10-17 10:10:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692 [2022-10-17 10:10:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_clear_bchannel [2022-10-17 10:10:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_clear_bchannel [2022-10-17 10:10:17,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:10:17,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:10:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 10:10:17,934 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 10:10:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-17 10:10:17,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-17 10:10:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:10:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:10:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_unregister_device [2022-10-17 10:10:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_unregister_device [2022-10-17 10:10:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692 [2022-10-17 10:10:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692 [2022-10-17 10:10:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure W6692B_interrupt [2022-10-17 10:10:17,943 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692B_interrupt [2022-10-17 10:10:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-10-17 10:10:17,944 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-10-17 10:10:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure outsb [2022-10-17 10:10:17,944 INFO L138 BoogieDeclarations]: Found implementation of procedure outsb [2022-10-17 10:10:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:10:17,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:10:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:10:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:10:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Bfifo [2022-10-17 10:10:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Bfifo [2022-10-17 10:10:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-17 10:10:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-17 10:10:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Bfifo [2022-10-17 10:10:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Bfifo [2022-10-17 10:10:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692B [2022-10-17 10:10:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692B [2022-10-17 10:10:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-17 10:10:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-17 10:10:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Dfifo [2022-10-17 10:10:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Dfifo [2022-10-17 10:10:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:10:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:10:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-17 10:10:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-17 10:10:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:10:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:10:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:10:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:10:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-10-17 10:10:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-10-17 10:10:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_led_handler [2022-10-17 10:10:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_led_handler [2022-10-17 10:10:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure send_next [2022-10-17 10:10:17,949 INFO L138 BoogieDeclarations]: Found implementation of procedure send_next [2022-10-17 10:10:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 10:10:17,950 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 10:10:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 10:10:17,951 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 10:10:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692B [2022-10-17 10:10:17,952 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692B [2022-10-17 10:10:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel [2022-10-17 10:10:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel [2022-10-17 10:10:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel [2022-10-17 10:10:17,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel [2022-10-17 10:10:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:10:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure ph_command [2022-10-17 10:10:17,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_command [2022-10-17 10:10:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-17 10:10:17,955 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-17 10:10:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-10-17 10:10:17,956 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-10-17 10:10:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-17 10:10:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-17 10:10:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure _set_debug [2022-10-17 10:10:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_debug [2022-10-17 10:10:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-10-17 10:10:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-10-17 10:10:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:10:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:10:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-10-17 10:10:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-10-17 10:10:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwirq [2022-10-17 10:10:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwirq [2022-10-17 10:10:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:10:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_probe [2022-10-17 10:10:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_probe [2022-10-17 10:10:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-10-17 10:10:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-10-17 10:10:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-10-17 10:10:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-10-17 10:10:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:10:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:10:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 10:10:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 10:10:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:10:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-10-17 10:10:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-10-17 10:10:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-10-17 10:10:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-10-17 10:10:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-10-17 10:10:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-10-17 10:10:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:10:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure recv_Bchannel [2022-10-17 10:10:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure recv_Bchannel [2022-10-17 10:10:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-10-17 10:10:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-10-17 10:10:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:10:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-17 10:10:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-17 10:10:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-10-17 10:10:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-10-17 10:10:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-10-17 10:10:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-10-17 10:10:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Dfifo [2022-10-17 10:10:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Dfifo [2022-10-17 10:10:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_mode [2022-10-17 10:10:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_mode [2022-10-17 10:10:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_dframe [2022-10-17 10:10:17,967 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_dframe [2022-10-17 10:10:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure mI_alloc_skb [2022-10-17 10:10:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure mI_alloc_skb [2022-10-17 10:10:17,970 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-17 10:10:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-17 10:10:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event [2022-10-17 10:10:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event [2022-10-17 10:10:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-10-17 10:10:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-10-17 10:10:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-10-17 10:10:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-10-17 10:10:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:10:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-10-17 10:10:17,978 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-10-17 10:10:17,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:10:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:10:18,584 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:10:18,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:10:19,769 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:10:22,188 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:10:22,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:10:22,204 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:10:22,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:10:22 BoogieIcfgContainer [2022-10-17 10:10:22,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:10:22,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:10:22,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:10:22,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:10:22,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:10:14" (1/3) ... [2022-10-17 10:10:22,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15411faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:10:22, skipping insertion in model container [2022-10-17 10:10:22,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:17" (2/3) ... [2022-10-17 10:10:22,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15411faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:10:22, skipping insertion in model container [2022-10-17 10:10:22,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:10:22" (3/3) ... [2022-10-17 10:10:22,221 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2022-10-17 10:10:22,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:10:22,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:10:22,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:10:22,350 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fd29be2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:10:22,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:10:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 692 states have (on average 1.3482658959537572) internal successors, (933), 726 states have internal predecessors, (933), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) [2022-10-17 10:10:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 10:10:22,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:22,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:22,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:22,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:22,386 INFO L85 PathProgramCache]: Analyzing trace with hash 982112823, now seen corresponding path program 1 times [2022-10-17 10:10:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:22,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539439450] [2022-10-17 10:10:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:10:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:10:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:10:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-17 10:10:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:23,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539439450] [2022-10-17 10:10:23,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539439450] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:23,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:23,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:10:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617601547] [2022-10-17 10:10:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:10:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:10:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:10:23,328 INFO L87 Difference]: Start difference. First operand has 1020 states, 692 states have (on average 1.3482658959537572) internal successors, (933), 726 states have internal predecessors, (933), 266 states have call successors, (266), 61 states have call predecessors, (266), 60 states have return successors, (260), 254 states have call predecessors, (260), 260 states have call successors, (260) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:10:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:26,061 INFO L93 Difference]: Finished difference Result 2062 states and 2974 transitions. [2022-10-17 10:10:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:10:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2022-10-17 10:10:26,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:26,085 INFO L225 Difference]: With dead ends: 2062 [2022-10-17 10:10:26,086 INFO L226 Difference]: Without dead ends: 1030 [2022-10-17 10:10:26,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:10:26,104 INFO L413 NwaCegarLoop]: 1399 mSDtfsCounter, 328 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:26,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 2092 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:10:26,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-10-17 10:10:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2022-10-17 10:10:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 683 states have (on average 1.3250366032210834) internal successors, (905), 709 states have internal predecessors, (905), 260 states have call successors, (260), 60 states have call predecessors, (260), 59 states have return successors, (259), 253 states have call predecessors, (259), 259 states have call successors, (259) [2022-10-17 10:10:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1424 transitions. [2022-10-17 10:10:26,280 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1424 transitions. Word has length 63 [2022-10-17 10:10:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:26,281 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1424 transitions. [2022-10-17 10:10:26,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:10:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1424 transitions. [2022-10-17 10:10:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 10:10:26,285 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:26,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:10:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:10:26,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1308437617, now seen corresponding path program 1 times [2022-10-17 10:10:26,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:26,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167714538] [2022-10-17 10:10:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:26,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:10:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:10:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:10:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-17 10:10:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:26,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167714538] [2022-10-17 10:10:26,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167714538] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:26,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:26,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:10:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829297744] [2022-10-17 10:10:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:26,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:10:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:26,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:10:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:10:26,811 INFO L87 Difference]: Start difference. First operand 1003 states and 1424 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 10:10:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:30,327 INFO L93 Difference]: Finished difference Result 2697 states and 3834 transitions. [2022-10-17 10:10:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:10:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-10-17 10:10:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:30,344 INFO L225 Difference]: With dead ends: 2697 [2022-10-17 10:10:30,344 INFO L226 Difference]: Without dead ends: 1703 [2022-10-17 10:10:30,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:10:30,352 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 1309 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:30,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3331 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 10:10:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-10-17 10:10:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1650. [2022-10-17 10:10:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1136 states have (on average 1.3397887323943662) internal successors, (1522), 1186 states have internal predecessors, (1522), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-10-17 10:10:30,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2347 transitions. [2022-10-17 10:10:30,465 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2347 transitions. Word has length 63 [2022-10-17 10:10:30,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:30,466 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2347 transitions. [2022-10-17 10:10:30,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-17 10:10:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2347 transitions. [2022-10-17 10:10:30,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-17 10:10:30,470 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:30,470 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-10-17 10:10:30,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:10:30,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:30,471 INFO L85 PathProgramCache]: Analyzing trace with hash 866229186, now seen corresponding path program 1 times [2022-10-17 10:10:30,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:30,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998642541] [2022-10-17 10:10:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:10:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:10:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:10:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:10:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-17 10:10:30,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:30,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998642541] [2022-10-17 10:10:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998642541] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:30,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:30,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:10:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670384002] [2022-10-17 10:10:30,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:30,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:10:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:10:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:10:30,963 INFO L87 Difference]: Start difference. First operand 1650 states and 2347 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:10:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:34,921 INFO L93 Difference]: Finished difference Result 3331 states and 4744 transitions. [2022-10-17 10:10:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:10:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 93 [2022-10-17 10:10:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:34,936 INFO L225 Difference]: With dead ends: 3331 [2022-10-17 10:10:34,936 INFO L226 Difference]: Without dead ends: 1699 [2022-10-17 10:10:34,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:10:34,947 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 171 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:34,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 3744 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-10-17 10:10:34,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-10-17 10:10:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1650. [2022-10-17 10:10:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1136 states have (on average 1.3389084507042253) internal successors, (1521), 1186 states have internal predecessors, (1521), 413 states have call successors, (413), 101 states have call predecessors, (413), 100 states have return successors, (412), 400 states have call predecessors, (412), 412 states have call successors, (412) [2022-10-17 10:10:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2346 transitions. [2022-10-17 10:10:35,047 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2346 transitions. Word has length 93 [2022-10-17 10:10:35,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:35,050 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2346 transitions. [2022-10-17 10:10:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-17 10:10:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2346 transitions. [2022-10-17 10:10:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 10:10:35,105 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:35,105 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-10-17 10:10:35,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:10:35,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:35,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:35,107 INFO L85 PathProgramCache]: Analyzing trace with hash 324092267, now seen corresponding path program 1 times [2022-10-17 10:10:35,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:35,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655612744] [2022-10-17 10:10:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:35,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:10:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:10:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:10:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-10-17 10:10:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:10:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-17 10:10:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:35,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655612744] [2022-10-17 10:10:35,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655612744] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:35,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:35,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:10:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019348845] [2022-10-17 10:10:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:35,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:10:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:10:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:10:35,869 INFO L87 Difference]: Start difference. First operand 1650 states and 2346 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:10:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:10:39,779 INFO L93 Difference]: Finished difference Result 1738 states and 2451 transitions. [2022-10-17 10:10:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:10:39,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-10-17 10:10:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:10:39,792 INFO L225 Difference]: With dead ends: 1738 [2022-10-17 10:10:39,793 INFO L226 Difference]: Without dead ends: 1735 [2022-10-17 10:10:39,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:10:39,796 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 556 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:10:39,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 3409 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-10-17 10:10:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-10-17 10:10:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1684. [2022-10-17 10:10:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1159 states have (on average 1.3330457290767903) internal successors, (1545), 1209 states have internal predecessors, (1545), 416 states have call successors, (416), 109 states have call predecessors, (416), 108 states have return successors, (415), 403 states have call predecessors, (415), 415 states have call successors, (415) [2022-10-17 10:10:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2376 transitions. [2022-10-17 10:10:39,889 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2376 transitions. Word has length 110 [2022-10-17 10:10:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:10:39,889 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2376 transitions. [2022-10-17 10:10:39,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-17 10:10:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2376 transitions. [2022-10-17 10:10:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-10-17 10:10:39,893 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:10:39,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:10:39,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:10:39,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:10:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:10:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash 647215035, now seen corresponding path program 1 times [2022-10-17 10:10:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:10:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388416589] [2022-10-17 10:10:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:10:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:10:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:10:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:10:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:10:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:10:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:10:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:10:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:10:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-17 10:10:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-10-17 10:10:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:10:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-10-17 10:10:40,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:10:40,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388416589] [2022-10-17 10:10:40,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388416589] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:10:40,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:10:40,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:10:40,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620402140] [2022-10-17 10:10:40,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:10:40,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:10:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:10:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:10:40,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:10:40,645 INFO L87 Difference]: Start difference. First operand 1684 states and 2376 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)