./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.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_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/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_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/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_d5b5d7d2-8635-478c-bcf7-1998fa68e915/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 f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 --- 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 11:04:51,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:04:51,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:04:52,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:04:52,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:04:52,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:04:52,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:04:52,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:04:52,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:04:52,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:04:52,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:04:52,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:04:52,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:04:52,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:04:52,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:04:52,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:04:52,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:04:52,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:04:52,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:04:52,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:04:52,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:04:52,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:04:52,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:04:52,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:04:52,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:04:52,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:04:52,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:04:52,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:04:52,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:04:52,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:04:52,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:04:52,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:04:52,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:04:52,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:04:52,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:04:52,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:04:52,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:04:52,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:04:52,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:04:52,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:04:52,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:04:52,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 11:04:52,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:04:52,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:04:52,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:04:52,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:04:52,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:04:52,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:04:52,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:04:52,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:04:52,172 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:04:52,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:04:52,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:04:52,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:04:52,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:04:52,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:04:52,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:04:52,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:04:52,174 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:04:52,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:04:52,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:04:52,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:04:52,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:04:52,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:52,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:04:52,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:04:52,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:04:52,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:04:52,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:04:52,179 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:04:52,179 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:04:52,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:04:52,179 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_d5b5d7d2-8635-478c-bcf7-1998fa68e915/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 [2022-10-17 11:04:52,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:04:52,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:04:52,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:04:52,538 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:04:52,538 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:04:52,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2022-10-17 11:04:52,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/data/c6f428a6a/1b33397f971b4f799d495a33c9d51672/FLAGdec8934d7 [2022-10-17 11:04:53,497 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:04:53,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2022-10-17 11:04:53,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/data/c6f428a6a/1b33397f971b4f799d495a33c9d51672/FLAGdec8934d7 [2022-10-17 11:04:53,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/data/c6f428a6a/1b33397f971b4f799d495a33c9d51672 [2022-10-17 11:04:53,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:04:53,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:04:53,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:53,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:04:53,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:04:53,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a381c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:53, skipping insertion in model container [2022-10-17 11:04:53,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:04:53" (1/1) ... [2022-10-17 11:04:53,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:04:54,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:04:55,252 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_d5b5d7d2-8635-478c-bcf7-1998fa68e915/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2022-10-17 11:04:55,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:55,476 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:04:55,787 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_d5b5d7d2-8635-478c-bcf7-1998fa68e915/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2022-10-17 11:04:55,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:04:55,915 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:04:55,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55 WrapperNode [2022-10-17 11:04:55,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:04:55,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:55,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:04:55,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:04:55,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,137 INFO L138 Inliner]: procedures = 167, calls = 920, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 1939 [2022-10-17 11:04:56,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:04:56,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:04:56,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:04:56,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:04:56,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,327 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:04:56,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:04:56,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:04:56,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:04:56,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (1/1) ... [2022-10-17 11:04:56,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:04:56,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:04:56,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:04:56,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:04:56,507 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_request [2022-10-17 11:04:56,507 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_request [2022-10-17 11:04:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2022-10-17 11:04:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2022-10-17 11:04:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-10-17 11:04:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-10-17 11:04:56,508 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_audio_ioctl [2022-10-17 11:04:56,508 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_audio_ioctl [2022-10-17 11:04:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2022-10-17 11:04:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2022-10-17 11:04:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2022-10-17 11:04:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2022-10-17 11:04:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 11:04:56,509 INFO L130 BoogieDeclarations]: Found specification of procedure ps_set_intr [2022-10-17 11:04:56,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ps_set_intr [2022-10-17 11:04:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_packet [2022-10-17 11:04:56,510 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_packet [2022-10-17 11:04:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 11:04:56,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 11:04:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:04:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_drive_status [2022-10-17 11:04:56,511 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_drive_status [2022-10-17 11:04:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2022-10-17 11:04:56,511 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2022-10-17 11:04:56,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 11:04:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 11:04:56,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 11:04:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 11:04:56,512 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-10-17 11:04:56,512 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-10-17 11:04:56,512 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_tray_move [2022-10-17 11:04:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_tray_move [2022-10-17 11:04:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_read [2022-10-17 11:04:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_read [2022-10-17 11:04:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:04:56,513 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 11:04:56,513 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 11:04:56,514 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_check_events [2022-10-17 11:04:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_check_events [2022-10-17 11:04:56,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 11:04:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 11:04:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_lock_door [2022-10-17 11:04:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_lock_door [2022-10-17 11:04:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:04:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2022-10-17 11:04:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2022-10-17 11:04:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 11:04:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 11:04:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_check_events [2022-10-17 11:04:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_check_events [2022-10-17 11:04:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 11:04:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 11:04:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_sleep [2022-10-17 11:04:56,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_sleep [2022-10-17 11:04:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_wait [2022-10-17 11:04:56,518 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_wait [2022-10-17 11:04:56,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:04:56,519 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_atapi [2022-10-17 11:04:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_atapi [2022-10-17 11:04:56,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pcd_mutex [2022-10-17 11:04:56,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pcd_mutex [2022-10-17 11:04:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_get_mcn [2022-10-17 11:04:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_get_mcn [2022-10-17 11:04:56,521 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-10-17 11:04:56,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-10-17 11:04:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:04:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:04:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_identify [2022-10-17 11:04:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_identify [2022-10-17 11:04:56,522 INFO L130 BoogieDeclarations]: Found specification of procedure next_request [2022-10-17 11:04:56,522 INFO L138 BoogieDeclarations]: Found implementation of procedure next_request [2022-10-17 11:04:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:04:56,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 11:04:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 11:04:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_probe [2022-10-17 11:04:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_probe [2022-10-17 11:04:56,524 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_command [2022-10-17 11:04:56,524 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_command [2022-10-17 11:04:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_completion [2022-10-17 11:04:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_completion [2022-10-17 11:04:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:04:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_drive_reset [2022-10-17 11:04:56,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_drive_reset [2022-10-17 11:04:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 11:04:56,525 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2022-10-17 11:04:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2022-10-17 11:04:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2022-10-17 11:04:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2022-10-17 11:04:56,526 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2022-10-17 11:04:56,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2022-10-17 11:04:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pcd_mutex [2022-10-17 11:04:56,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pcd_mutex [2022-10-17 11:04:56,527 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-10-17 11:04:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-10-17 11:04:56,528 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 11:04:56,528 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 11:04:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-10-17 11:04:56,529 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-10-17 11:04:56,529 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_reset [2022-10-17 11:04:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_reset [2022-10-17 11:04:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:04:56,530 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_ioctl [2022-10-17 11:04:56,530 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_ioctl [2022-10-17 11:04:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 11:04:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:04:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:04:56,531 INFO L130 BoogieDeclarations]: Found specification of procedure pi_do_claimed [2022-10-17 11:04:56,531 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_do_claimed [2022-10-17 11:04:57,100 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:04:57,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:05:04,766 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:05:04,792 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:05:04,792 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 11:05:04,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:04 BoogieIcfgContainer [2022-10-17 11:05:04,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:05:04,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:05:04,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:05:04,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:05:04,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:04:53" (1/3) ... [2022-10-17 11:05:04,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d465e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:05:04, skipping insertion in model container [2022-10-17 11:05:04,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:04:55" (2/3) ... [2022-10-17 11:05:04,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d465e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:05:04, skipping insertion in model container [2022-10-17 11:05:04,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:04" (3/3) ... [2022-10-17 11:05:04,812 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2022-10-17 11:05:04,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:05:04,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:05:04,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:05:04,997 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;@1a0c422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:05:05,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:05:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 760 states, 557 states have (on average 1.3967684021543985) internal successors, (778), 581 states have internal predecessors, (778), 160 states have call successors, (160), 46 states have call predecessors, (160), 46 states have return successors, (160), 155 states have call predecessors, (160), 160 states have call successors, (160) [2022-10-17 11:05:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 11:05:05,029 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:05,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:05,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:05,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2144132064, now seen corresponding path program 1 times [2022-10-17 11:05:05,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:05,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484510505] [2022-10-17 11:05:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:05,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:05,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484510505] [2022-10-17 11:05:05,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484510505] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:05,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:05,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:05:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299644952] [2022-10-17 11:05:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:05,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:05,775 INFO L87 Difference]: Start difference. First operand has 760 states, 557 states have (on average 1.3967684021543985) internal successors, (778), 581 states have internal predecessors, (778), 160 states have call successors, (160), 46 states have call predecessors, (160), 46 states have return successors, (160), 155 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:06,120 INFO L93 Difference]: Finished difference Result 2171 states and 3237 transitions. [2022-10-17 11:05:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:06,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-17 11:05:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:06,153 INFO L225 Difference]: With dead ends: 2171 [2022-10-17 11:05:06,153 INFO L226 Difference]: Without dead ends: 1406 [2022-10-17 11:05:06,167 INFO L412 NwaCegarLoop]: 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 [2022-10-17 11:05:06,171 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 947 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:06,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 2225 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:05:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-10-17 11:05:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1394. [2022-10-17 11:05:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1021 states have (on average 1.3800195886385895) internal successors, (1409), 1053 states have internal predecessors, (1409), 288 states have call successors, (288), 85 states have call predecessors, (288), 84 states have return successors, (282), 271 states have call predecessors, (282), 282 states have call successors, (282) [2022-10-17 11:05:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1979 transitions. [2022-10-17 11:05:06,367 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1979 transitions. Word has length 16 [2022-10-17 11:05:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:06,370 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 1979 transitions. [2022-10-17 11:05:06,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1979 transitions. [2022-10-17 11:05:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 11:05:06,384 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:06,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:06,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:05:06,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:06,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2095899209, now seen corresponding path program 1 times [2022-10-17 11:05:06,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:06,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21496244] [2022-10-17 11:05:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:06,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:06,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21496244] [2022-10-17 11:05:06,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21496244] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:06,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:06,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:05:06,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106633552] [2022-10-17 11:05:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:06,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:06,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:06,652 INFO L87 Difference]: Start difference. First operand 1394 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:06,765 INFO L93 Difference]: Finished difference Result 2785 states and 3955 transitions. [2022-10-17 11:05:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:06,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 11:05:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:06,784 INFO L225 Difference]: With dead ends: 2785 [2022-10-17 11:05:06,785 INFO L226 Difference]: Without dead ends: 1394 [2022-10-17 11:05:06,794 INFO L412 NwaCegarLoop]: 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 [2022-10-17 11:05:06,797 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 1034 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:06,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 1043 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-10-17 11:05:06,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2022-10-17 11:05:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1021 states have (on average 1.3780607247796277) internal successors, (1407), 1053 states have internal predecessors, (1407), 288 states have call successors, (288), 85 states have call predecessors, (288), 84 states have return successors, (282), 271 states have call predecessors, (282), 282 states have call successors, (282) [2022-10-17 11:05:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1977 transitions. [2022-10-17 11:05:06,921 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1977 transitions. Word has length 18 [2022-10-17 11:05:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:06,921 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 1977 transitions. [2022-10-17 11:05:06,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1977 transitions. [2022-10-17 11:05:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 11:05:06,925 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:06,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:06,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:05:06,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash 685874875, now seen corresponding path program 1 times [2022-10-17 11:05:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:06,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075718214] [2022-10-17 11:05:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:06,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:05:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:07,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:07,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075718214] [2022-10-17 11:05:07,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075718214] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:07,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:07,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:05:07,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228354034] [2022-10-17 11:05:07,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:07,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:07,180 INFO L87 Difference]: Start difference. First operand 1394 states and 1977 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:05:07,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:07,452 INFO L93 Difference]: Finished difference Result 3867 states and 5478 transitions. [2022-10-17 11:05:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:07,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-10-17 11:05:07,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:07,481 INFO L225 Difference]: With dead ends: 3867 [2022-10-17 11:05:07,481 INFO L226 Difference]: Without dead ends: 2476 [2022-10-17 11:05:07,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:07,493 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 1000 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:07,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 2093 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:05:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-10-17 11:05:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2450. [2022-10-17 11:05:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 1767 states have (on average 1.375778155065082) internal successors, (2431), 1824 states have internal predecessors, (2431), 523 states have call successors, (523), 160 states have call predecessors, (523), 159 states have return successors, (517), 497 states have call predecessors, (517), 517 states have call successors, (517) [2022-10-17 11:05:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3471 transitions. [2022-10-17 11:05:07,731 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3471 transitions. Word has length 21 [2022-10-17 11:05:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:07,731 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3471 transitions. [2022-10-17 11:05:07,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:05:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3471 transitions. [2022-10-17 11:05:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 11:05:07,734 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:07,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:07,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:05:07,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash -797188322, now seen corresponding path program 1 times [2022-10-17 11:05:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:07,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933208749] [2022-10-17 11:05:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:07,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:08,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933208749] [2022-10-17 11:05:08,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933208749] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:08,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:05:08,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:05:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178849731] [2022-10-17 11:05:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:08,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:05:08,014 INFO L87 Difference]: Start difference. First operand 2450 states and 3471 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:08,822 INFO L93 Difference]: Finished difference Result 4915 states and 6965 transitions. [2022-10-17 11:05:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-17 11:05:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:08,856 INFO L225 Difference]: With dead ends: 4915 [2022-10-17 11:05:08,856 INFO L226 Difference]: Without dead ends: 2468 [2022-10-17 11:05:08,871 INFO L412 NwaCegarLoop]: 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 [2022-10-17 11:05:08,874 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 11 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:08,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2078 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 11:05:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-10-17 11:05:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2452. [2022-10-17 11:05:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1769 states have (on average 1.3753533069530808) internal successors, (2433), 1826 states have internal predecessors, (2433), 523 states have call successors, (523), 160 states have call predecessors, (523), 159 states have return successors, (517), 497 states have call predecessors, (517), 517 states have call successors, (517) [2022-10-17 11:05:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3473 transitions. [2022-10-17 11:05:09,078 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3473 transitions. Word has length 25 [2022-10-17 11:05:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:09,079 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3473 transitions. [2022-10-17 11:05:09,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3473 transitions. [2022-10-17 11:05:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 11:05:09,081 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:09,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:09,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:05:09,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:09,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1143234473, now seen corresponding path program 1 times [2022-10-17 11:05:09,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:09,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567884151] [2022-10-17 11:05:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:09,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567884151] [2022-10-17 11:05:09,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567884151] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:09,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732407867] [2022-10-17 11:05:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:09,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:09,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:09,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:09,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:05:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:09,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:05:09,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:09,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:09,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732407867] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:09,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:09,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:09,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639658742] [2022-10-17 11:05:09,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:09,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:09,858 INFO L87 Difference]: Start difference. First operand 2452 states and 3473 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:10,024 INFO L93 Difference]: Finished difference Result 4935 states and 6997 transitions. [2022-10-17 11:05:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:10,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-10-17 11:05:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:10,045 INFO L225 Difference]: With dead ends: 4935 [2022-10-17 11:05:10,046 INFO L226 Difference]: Without dead ends: 2486 [2022-10-17 11:05:10,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:10,062 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 15 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:10,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2082 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2022-10-17 11:05:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2456. [2022-10-17 11:05:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 1773 states have (on average 1.374506486181613) internal successors, (2437), 1830 states have internal predecessors, (2437), 523 states have call successors, (523), 160 states have call predecessors, (523), 159 states have return successors, (517), 497 states have call predecessors, (517), 517 states have call successors, (517) [2022-10-17 11:05:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3477 transitions. [2022-10-17 11:05:10,232 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3477 transitions. Word has length 29 [2022-10-17 11:05:10,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:10,233 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 3477 transitions. [2022-10-17 11:05:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3477 transitions. [2022-10-17 11:05:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 11:05:10,236 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:10,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:10,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:10,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:10,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:10,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1071697086, now seen corresponding path program 1 times [2022-10-17 11:05:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:10,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044848917] [2022-10-17 11:05:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:10,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044848917] [2022-10-17 11:05:10,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044848917] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:10,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618203154] [2022-10-17 11:05:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:10,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:10,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:10,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:10,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:05:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:11,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:11,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:05:11,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:11,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618203154] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:11,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:11,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390412327] [2022-10-17 11:05:11,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:11,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:11,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:11,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:11,216 INFO L87 Difference]: Start difference. First operand 2456 states and 3477 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:11,543 INFO L93 Difference]: Finished difference Result 7314 states and 10349 transitions. [2022-10-17 11:05:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-10-17 11:05:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:11,600 INFO L225 Difference]: With dead ends: 7314 [2022-10-17 11:05:11,600 INFO L226 Difference]: Without dead ends: 4861 [2022-10-17 11:05:11,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:11,618 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 1013 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:11,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2389 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2022-10-17 11:05:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 3761. [2022-10-17 11:05:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 2730 states have (on average 1.3732600732600733) internal successors, (3749), 2813 states have internal predecessors, (3749), 787 states have call successors, (787), 244 states have call predecessors, (787), 243 states have return successors, (781), 751 states have call predecessors, (781), 781 states have call successors, (781) [2022-10-17 11:05:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 5317 transitions. [2022-10-17 11:05:11,930 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 5317 transitions. Word has length 33 [2022-10-17 11:05:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:11,930 INFO L495 AbstractCegarLoop]: Abstraction has 3761 states and 5317 transitions. [2022-10-17 11:05:11,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 5317 transitions. [2022-10-17 11:05:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 11:05:11,935 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:11,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:11,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 11:05:12,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1539817306, now seen corresponding path program 1 times [2022-10-17 11:05:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:12,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935537993] [2022-10-17 11:05:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:05:12,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935537993] [2022-10-17 11:05:12,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935537993] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575661043] [2022-10-17 11:05:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:12,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:12,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:12,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:05:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:12,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:12,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:12,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:12,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575661043] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:12,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:12,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300157913] [2022-10-17 11:05:12,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:12,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:12,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:12,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:12,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:12,849 INFO L87 Difference]: Start difference. First operand 3761 states and 5317 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:05:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:13,169 INFO L93 Difference]: Finished difference Result 8622 states and 12432 transitions. [2022-10-17 11:05:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:13,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-10-17 11:05:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:13,210 INFO L225 Difference]: With dead ends: 8622 [2022-10-17 11:05:13,210 INFO L226 Difference]: Without dead ends: 4864 [2022-10-17 11:05:13,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:13,228 INFO L413 NwaCegarLoop]: 1279 mSDtfsCounter, 304 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:13,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 2329 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2022-10-17 11:05:13,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 3791. [2022-10-17 11:05:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3791 states, 2754 states have (on average 1.3736383442265796) internal successors, (3783), 2837 states have internal predecessors, (3783), 793 states have call successors, (793), 244 states have call predecessors, (793), 243 states have return successors, (787), 757 states have call predecessors, (787), 787 states have call successors, (787) [2022-10-17 11:05:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 5363 transitions. [2022-10-17 11:05:13,545 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 5363 transitions. Word has length 34 [2022-10-17 11:05:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:13,545 INFO L495 AbstractCegarLoop]: Abstraction has 3791 states and 5363 transitions. [2022-10-17 11:05:13,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:05:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 5363 transitions. [2022-10-17 11:05:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 11:05:13,548 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:13,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:13,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:13,771 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1680265364, now seen corresponding path program 1 times [2022-10-17 11:05:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:13,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327205503] [2022-10-17 11:05:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327205503] [2022-10-17 11:05:14,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327205503] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928430860] [2022-10-17 11:05:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:14,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:14,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:14,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:14,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 11:05:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:14,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:14,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:05:14,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:14,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928430860] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:14,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:14,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:14,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515423036] [2022-10-17 11:05:14,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:14,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:14,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:14,612 INFO L87 Difference]: Start difference. First operand 3791 states and 5363 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:14,846 INFO L93 Difference]: Finished difference Result 3813 states and 5389 transitions. [2022-10-17 11:05:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-17 11:05:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:14,878 INFO L225 Difference]: With dead ends: 3813 [2022-10-17 11:05:14,879 INFO L226 Difference]: Without dead ends: 3802 [2022-10-17 11:05:14,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:14,882 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1039 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:14,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1069 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2022-10-17 11:05:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3791. [2022-10-17 11:05:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3791 states, 2754 states have (on average 1.373275236020334) internal successors, (3782), 2837 states have internal predecessors, (3782), 793 states have call successors, (793), 244 states have call predecessors, (793), 243 states have return successors, (787), 757 states have call predecessors, (787), 787 states have call successors, (787) [2022-10-17 11:05:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3791 states to 3791 states and 5362 transitions. [2022-10-17 11:05:15,289 INFO L78 Accepts]: Start accepts. Automaton has 3791 states and 5362 transitions. Word has length 43 [2022-10-17 11:05:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:15,291 INFO L495 AbstractCegarLoop]: Abstraction has 3791 states and 5362 transitions. [2022-10-17 11:05:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3791 states and 5362 transitions. [2022-10-17 11:05:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 11:05:15,298 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:15,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:15,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:15,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1737523666, now seen corresponding path program 1 times [2022-10-17 11:05:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373093822] [2022-10-17 11:05:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:15,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373093822] [2022-10-17 11:05:15,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373093822] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455272717] [2022-10-17 11:05:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:15,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:15,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:15,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:15,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 11:05:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:16,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:16,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:05:16,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:16,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455272717] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:16,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:16,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339627970] [2022-10-17 11:05:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:16,336 INFO L87 Difference]: Start difference. First operand 3791 states and 5362 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:16,604 INFO L93 Difference]: Finished difference Result 3793 states and 5363 transitions. [2022-10-17 11:05:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-17 11:05:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:16,634 INFO L225 Difference]: With dead ends: 3793 [2022-10-17 11:05:16,634 INFO L226 Difference]: Without dead ends: 3790 [2022-10-17 11:05:16,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:16,638 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 1002 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:16,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1041 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-10-17 11:05:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3790. [2022-10-17 11:05:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3790 states, 2754 states have (on average 1.3729121278140886) internal successors, (3781), 2836 states have internal predecessors, (3781), 792 states have call successors, (792), 244 states have call predecessors, (792), 243 states have return successors, (787), 757 states have call predecessors, (787), 787 states have call successors, (787) [2022-10-17 11:05:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3790 states to 3790 states and 5360 transitions. [2022-10-17 11:05:16,926 INFO L78 Accepts]: Start accepts. Automaton has 3790 states and 5360 transitions. Word has length 43 [2022-10-17 11:05:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:16,927 INFO L495 AbstractCegarLoop]: Abstraction has 3790 states and 5360 transitions. [2022-10-17 11:05:16,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states and 5360 transitions. [2022-10-17 11:05:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 11:05:16,930 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:16,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:16,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:17,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:17,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1971689951, now seen corresponding path program 1 times [2022-10-17 11:05:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:17,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141225855] [2022-10-17 11:05:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:17,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141225855] [2022-10-17 11:05:17,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141225855] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:17,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524855449] [2022-10-17 11:05:17,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:17,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:17,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:17,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:17,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 11:05:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:17,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:17,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:05:17,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:17,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524855449] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:17,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:17,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542439022] [2022-10-17 11:05:17,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:17,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:17,893 INFO L87 Difference]: Start difference. First operand 3790 states and 5360 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:18,142 INFO L93 Difference]: Finished difference Result 3792 states and 5361 transitions. [2022-10-17 11:05:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:18,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-10-17 11:05:18,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:18,166 INFO L225 Difference]: With dead ends: 3792 [2022-10-17 11:05:18,166 INFO L226 Difference]: Without dead ends: 3789 [2022-10-17 11:05:18,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:18,170 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 999 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:18,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1039 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2022-10-17 11:05:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3789. [2022-10-17 11:05:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2754 states have (on average 1.3725490196078431) internal successors, (3780), 2835 states have internal predecessors, (3780), 791 states have call successors, (791), 244 states have call predecessors, (791), 243 states have return successors, (787), 757 states have call predecessors, (787), 787 states have call successors, (787) [2022-10-17 11:05:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5358 transitions. [2022-10-17 11:05:18,517 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5358 transitions. Word has length 44 [2022-10-17 11:05:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:18,517 INFO L495 AbstractCegarLoop]: Abstraction has 3789 states and 5358 transitions. [2022-10-17 11:05:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5358 transitions. [2022-10-17 11:05:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 11:05:18,521 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:18,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:18,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 11:05:18,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -993190219, now seen corresponding path program 1 times [2022-10-17 11:05:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:18,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982759934] [2022-10-17 11:05:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:18,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982759934] [2022-10-17 11:05:18,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982759934] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:18,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772947521] [2022-10-17 11:05:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:18,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:18,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:18,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:18,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 11:05:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:19,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:05:19,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:19,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772947521] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:19,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:19,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:19,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704181617] [2022-10-17 11:05:19,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:19,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:19,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:19,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:19,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:19,475 INFO L87 Difference]: Start difference. First operand 3789 states and 5358 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:19,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:19,811 INFO L93 Difference]: Finished difference Result 3791 states and 5359 transitions. [2022-10-17 11:05:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:19,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-10-17 11:05:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:19,842 INFO L225 Difference]: With dead ends: 3791 [2022-10-17 11:05:19,842 INFO L226 Difference]: Without dead ends: 3788 [2022-10-17 11:05:19,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:19,846 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 996 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:19,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1037 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2022-10-17 11:05:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3788. [2022-10-17 11:05:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2754 states have (on average 1.3721859114015977) internal successors, (3779), 2834 states have internal predecessors, (3779), 790 states have call successors, (790), 244 states have call predecessors, (790), 243 states have return successors, (787), 757 states have call predecessors, (787), 787 states have call successors, (787) [2022-10-17 11:05:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5356 transitions. [2022-10-17 11:05:20,202 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5356 transitions. Word has length 45 [2022-10-17 11:05:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:20,202 INFO L495 AbstractCegarLoop]: Abstraction has 3788 states and 5356 transitions. [2022-10-17 11:05:20,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5356 transitions. [2022-10-17 11:05:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-17 11:05:20,205 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:20,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:05:20,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 11:05:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:20,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:20,431 INFO L85 PathProgramCache]: Analyzing trace with hash -724464732, now seen corresponding path program 1 times [2022-10-17 11:05:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:20,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379287368] [2022-10-17 11:05:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:20,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379287368] [2022-10-17 11:05:20,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379287368] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:20,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060907541] [2022-10-17 11:05:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:20,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:20,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:20,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:20,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 11:05:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:21,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:05:21,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:05:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:05:21,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:05:21,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060907541] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:05:21,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:05:21,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 11:05:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498935772] [2022-10-17 11:05:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:05:21,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:05:21,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:05:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:05:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:21,144 INFO L87 Difference]: Start difference. First operand 3788 states and 5356 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:05:21,440 INFO L93 Difference]: Finished difference Result 3790 states and 5357 transitions. [2022-10-17 11:05:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:05:21,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-10-17 11:05:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:05:21,460 INFO L225 Difference]: With dead ends: 3790 [2022-10-17 11:05:21,460 INFO L226 Difference]: Without dead ends: 3758 [2022-10-17 11:05:21,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:05:21,464 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 963 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:05:21,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1057 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:05:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-10-17 11:05:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2022-10-17 11:05:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 2732 states have (on average 1.3711566617862372) internal successors, (3746), 2810 states have internal predecessors, (3746), 785 states have call successors, (785), 241 states have call predecessors, (785), 240 states have return successors, (784), 754 states have call predecessors, (784), 784 states have call successors, (784) [2022-10-17 11:05:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5315 transitions. [2022-10-17 11:05:21,825 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5315 transitions. Word has length 46 [2022-10-17 11:05:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:05:21,826 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5315 transitions. [2022-10-17 11:05:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:05:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5315 transitions. [2022-10-17 11:05:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 11:05:21,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:05:21,833 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 11:05:21,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-17 11:05:22,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:22,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:05:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 538714745, now seen corresponding path program 1 times [2022-10-17 11:05:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:22,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694670815] [2022-10-17 11:05:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 11:05:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 11:05:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-17 11:05:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 11:05:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:05:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:05:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:05:22,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694670815] [2022-10-17 11:05:22,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694670815] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:05:22,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737070924] [2022-10-17 11:05:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:22,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:05:22,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:22,264 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:05:22,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5b5d7d2-8635-478c-bcf7-1998fa68e915/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process