./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro --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 32bit --witnessprinter.graph.data.programhash 16b89964825dc5b7831662ee1568f8465e0e5c35795cab8e4e81d90352bde374 --- 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-8393723 [2022-11-18 18:42:46,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:42:46,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:42:46,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:42:46,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:42:46,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:42:46,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:42:46,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:42:46,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:42:46,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:42:46,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:42:46,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:42:46,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:42:46,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:42:46,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:42:46,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:42:46,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:42:46,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:42:46,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:42:46,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:42:46,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:42:46,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:42:46,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:42:46,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:42:46,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:42:46,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:42:46,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:42:47,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:42:47,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:42:47,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:42:47,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:42:47,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:42:47,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:42:47,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:42:47,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:42:47,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:42:47,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:42:47,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:42:47,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:42:47,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:42:47,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:42:47,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:42:47,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:42:47,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:42:47,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:42:47,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:42:47,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:42:47,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:42:47,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:42:47,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:42:47,053 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:42:47,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:42:47,055 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:42:47,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:42:47,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:42:47,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:42:47,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:42:47,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:42:47,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:42:47,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:42:47,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:42:47,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:42:47,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:42:47,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:42:47,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:42:47,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:42:47,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:47,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:42:47,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:42:47,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:42:47,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:42:47,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:42:47,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:42:47,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:42:47,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:42:47,061 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_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b89964825dc5b7831662ee1568f8465e0e5c35795cab8e4e81d90352bde374 [2022-11-18 18:42:47,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:42:47,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:42:47,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:42:47,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:42:47,392 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:42:47,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c [2022-11-18 18:42:47,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/data/93563e8c5/39d5e18257244fdc9a27c91856469177/FLAG99e0ce5ee [2022-11-18 18:42:48,054 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:42:48,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c [2022-11-18 18:42:48,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/data/93563e8c5/39d5e18257244fdc9a27c91856469177/FLAG99e0ce5ee [2022-11-18 18:42:48,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/data/93563e8c5/39d5e18257244fdc9a27c91856469177 [2022-11-18 18:42:48,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:42:48,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:42:48,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:48,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:42:48,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:42:48,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aab3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48, skipping insertion in model container [2022-11-18 18:42:48,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:42:48,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:42:48,651 WARN L234 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_9b18b0f2-9159-4e60-bded-b14df1e42a1e/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c[646,659] [2022-11-18 18:42:48,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:48,775 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:42:48,790 WARN L234 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_9b18b0f2-9159-4e60-bded-b14df1e42a1e/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c[646,659] [2022-11-18 18:42:48,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:48,917 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:42:48,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48 WrapperNode [2022-11-18 18:42:48,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:48,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:48,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:42:48,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:42:48,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,978 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 856 [2022-11-18 18:42:48,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:48,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:42:48,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:42:48,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:42:48,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:48,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:49,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:49,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:49,017 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:49,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:49,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:42:49,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:42:49,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:42:49,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:42:49,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (1/1) ... [2022-11-18 18:42:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:49,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:49,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:42:49,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:42:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:42:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:42:49,130 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-18 18:42:49,130 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-18 18:42:49,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:42:49,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:42:49,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:42:49,229 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:42:50,135 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:42:50,155 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:42:50,155 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-18 18:42:50,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:50 BoogieIcfgContainer [2022-11-18 18:42:50,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:42:50,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:42:50,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:42:50,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:42:50,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:42:48" (1/3) ... [2022-11-18 18:42:50,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b79ea0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:50, skipping insertion in model container [2022-11-18 18:42:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:48" (2/3) ... [2022-11-18 18:42:50,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b79ea0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:50, skipping insertion in model container [2022-11-18 18:42:50,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:50" (3/3) ... [2022-11-18 18:42:50,170 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.3.cil.c [2022-11-18 18:42:50,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:42:50,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:42:50,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:50,250 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;@acebc9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:50,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:42:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 275 states, 267 states have (on average 1.853932584269663) internal successors, (495), 273 states have internal predecessors, (495), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:42:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:42:50,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:50,282 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] [2022-11-18 18:42:50,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 193087219, now seen corresponding path program 1 times [2022-11-18 18:42:50,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:50,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020456319] [2022-11-18 18:42:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:50,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:50,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:50,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020456319] [2022-11-18 18:42:50,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020456319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:50,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:50,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453306500] [2022-11-18 18:42:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:50,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:50,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:50,656 INFO L87 Difference]: Start difference. First operand has 275 states, 267 states have (on average 1.853932584269663) internal successors, (495), 273 states have internal predecessors, (495), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-11-18 18:42:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:51,186 INFO L93 Difference]: Finished difference Result 724 states and 1329 transitions. [2022-11-18 18:42:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:51,191 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 [2022-11-18 18:42:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:51,216 INFO L225 Difference]: With dead ends: 724 [2022-11-18 18:42:51,216 INFO L226 Difference]: Without dead ends: 446 [2022-11-18 18:42:51,220 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 [2022-11-18 18:42:51,229 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 263 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:51,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 781 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:42:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-18 18:42:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 433. [2022-11-18 18:42:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 427 states have (on average 1.5971896955503513) internal successors, (682), 431 states have internal predecessors, (682), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 687 transitions. [2022-11-18 18:42:51,320 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 687 transitions. Word has length 29 [2022-11-18 18:42:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:51,321 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 687 transitions. [2022-11-18 18:42:51,321 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) [2022-11-18 18:42:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 687 transitions. [2022-11-18 18:42:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 18:42:51,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:51,324 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] [2022-11-18 18:42:51,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:42:51,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2107562570, now seen corresponding path program 1 times [2022-11-18 18:42:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633301782] [2022-11-18 18:42:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633301782] [2022-11-18 18:42:51,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633301782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:51,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:51,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137358028] [2022-11-18 18:42:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:51,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:51,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:51,394 INFO L87 Difference]: Start difference. First operand 433 states and 687 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-11-18 18:42:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:51,551 INFO L93 Difference]: Finished difference Result 1137 states and 1829 transitions. [2022-11-18 18:42:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:51,552 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), 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 39 [2022-11-18 18:42:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:51,555 INFO L225 Difference]: With dead ends: 1137 [2022-11-18 18:42:51,556 INFO L226 Difference]: Without dead ends: 718 [2022-11-18 18:42:51,564 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 [2022-11-18 18:42:51,566 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 326 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:51,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1024 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:42:51,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-18 18:42:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 705. [2022-11-18 18:42:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 699 states have (on average 1.6309012875536482) internal successors, (1140), 703 states have internal predecessors, (1140), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1145 transitions. [2022-11-18 18:42:51,640 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1145 transitions. Word has length 39 [2022-11-18 18:42:51,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:51,641 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 1145 transitions. [2022-11-18 18:42:51,642 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), 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) [2022-11-18 18:42:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1145 transitions. [2022-11-18 18:42:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 18:42:51,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:51,655 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] [2022-11-18 18:42:51,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:42:51,656 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:51,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 639754325, now seen corresponding path program 1 times [2022-11-18 18:42:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:51,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819968640] [2022-11-18 18:42:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:51,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:51,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:51,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819968640] [2022-11-18 18:42:51,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819968640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:51,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:51,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761812016] [2022-11-18 18:42:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:51,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:51,723 INFO L87 Difference]: Start difference. First operand 705 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-11-18 18:42:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:51,825 INFO L93 Difference]: Finished difference Result 1777 states and 2884 transitions. [2022-11-18 18:42:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:51,826 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), 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 40 [2022-11-18 18:42:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:51,831 INFO L225 Difference]: With dead ends: 1777 [2022-11-18 18:42:51,831 INFO L226 Difference]: Without dead ends: 1097 [2022-11-18 18:42:51,836 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 [2022-11-18 18:42:51,844 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 353 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:51,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 813 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:42:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-18 18:42:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1086. [2022-11-18 18:42:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1080 states have (on average 1.6203703703703705) internal successors, (1750), 1084 states have internal predecessors, (1750), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1755 transitions. [2022-11-18 18:42:51,917 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1755 transitions. Word has length 40 [2022-11-18 18:42:51,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:51,918 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1755 transitions. [2022-11-18 18:42:51,918 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), 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) [2022-11-18 18:42:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1755 transitions. [2022-11-18 18:42:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 18:42:51,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:51,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:51,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:42:51,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2131746944, now seen corresponding path program 1 times [2022-11-18 18:42:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:51,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235499145] [2022-11-18 18:42:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:51,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:52,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:52,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235499145] [2022-11-18 18:42:52,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235499145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:52,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:52,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:52,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661268819] [2022-11-18 18:42:52,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:52,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:52,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:52,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:52,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:52,091 INFO L87 Difference]: Start difference. First operand 1086 states and 1755 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-18 18:42:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:52,540 INFO L93 Difference]: Finished difference Result 2994 states and 4815 transitions. [2022-11-18 18:42:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:42:52,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 48 [2022-11-18 18:42:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:52,548 INFO L225 Difference]: With dead ends: 2994 [2022-11-18 18:42:52,548 INFO L226 Difference]: Without dead ends: 1933 [2022-11-18 18:42:52,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:52,558 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 584 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1566 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:42:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2022-11-18 18:42:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1700. [2022-11-18 18:42:52,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1694 states have (on average 1.5950413223140496) internal successors, (2702), 1698 states have internal predecessors, (2702), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2707 transitions. [2022-11-18 18:42:52,671 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2707 transitions. Word has length 48 [2022-11-18 18:42:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:52,672 INFO L495 AbstractCegarLoop]: Abstraction has 1700 states and 2707 transitions. [2022-11-18 18:42:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-18 18:42:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2707 transitions. [2022-11-18 18:42:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 18:42:52,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:52,674 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:42:52,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1086799200, now seen corresponding path program 1 times [2022-11-18 18:42:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:52,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104197267] [2022-11-18 18:42:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:52,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104197267] [2022-11-18 18:42:52,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104197267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:52,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:52,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:42:52,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329300614] [2022-11-18 18:42:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:52,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:42:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:42:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:42:52,811 INFO L87 Difference]: Start difference. First operand 1700 states and 2707 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-18 18:42:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:53,412 INFO L93 Difference]: Finished difference Result 5049 states and 7944 transitions. [2022-11-18 18:42:53,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:42:53,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 53 [2022-11-18 18:42:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:53,427 INFO L225 Difference]: With dead ends: 5049 [2022-11-18 18:42:53,427 INFO L226 Difference]: Without dead ends: 3368 [2022-11-18 18:42:53,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:42:53,430 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 742 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:53,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1056 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:42:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2022-11-18 18:42:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 2994. [2022-11-18 18:42:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2988 states have (on average 1.5686077643908969) internal successors, (4687), 2992 states have internal predecessors, (4687), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 4692 transitions. [2022-11-18 18:42:53,649 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 4692 transitions. Word has length 53 [2022-11-18 18:42:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 2994 states and 4692 transitions. [2022-11-18 18:42:53,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-18 18:42:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 4692 transitions. [2022-11-18 18:42:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 18:42:53,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:53,657 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:53,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:42:53,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:53,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1057984937, now seen corresponding path program 1 times [2022-11-18 18:42:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:53,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796685257] [2022-11-18 18:42:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:53,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:53,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796685257] [2022-11-18 18:42:53,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796685257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:53,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:53,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:53,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110648078] [2022-11-18 18:42:53,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:53,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:53,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:53,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:53,757 INFO L87 Difference]: Start difference. First operand 2994 states and 4692 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-18 18:42:54,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:54,065 INFO L93 Difference]: Finished difference Result 7033 states and 10981 transitions. [2022-11-18 18:42:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:54,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 53 [2022-11-18 18:42:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:54,082 INFO L225 Difference]: With dead ends: 7033 [2022-11-18 18:42:54,082 INFO L226 Difference]: Without dead ends: 4062 [2022-11-18 18:42:54,088 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 [2022-11-18 18:42:54,090 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 368 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:54,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 712 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:42:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2022-11-18 18:42:54,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3878. [2022-11-18 18:42:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3872 states have (on average 1.5488119834710743) internal successors, (5997), 3876 states have internal predecessors, (5997), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 6002 transitions. [2022-11-18 18:42:54,387 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 6002 transitions. Word has length 53 [2022-11-18 18:42:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:54,388 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 6002 transitions. [2022-11-18 18:42:54,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2022-11-18 18:42:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 6002 transitions. [2022-11-18 18:42:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 18:42:54,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:54,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:54,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:42:54,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -225924857, now seen corresponding path program 1 times [2022-11-18 18:42:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:54,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712157748] [2022-11-18 18:42:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:54,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:54,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712157748] [2022-11-18 18:42:54,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712157748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:54,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:54,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595258591] [2022-11-18 18:42:54,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:54,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:54,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:54,490 INFO L87 Difference]: Start difference. First operand 3878 states and 6002 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-18 18:42:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:55,031 INFO L93 Difference]: Finished difference Result 9322 states and 14548 transitions. [2022-11-18 18:42:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 60 [2022-11-18 18:42:55,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:55,051 INFO L225 Difference]: With dead ends: 9322 [2022-11-18 18:42:55,052 INFO L226 Difference]: Without dead ends: 5467 [2022-11-18 18:42:55,057 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 [2022-11-18 18:42:55,057 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 250 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:55,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 881 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:42:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2022-11-18 18:42:55,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 4698. [2022-11-18 18:42:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 4692 states have (on average 1.4919011082693947) internal successors, (7000), 4696 states have internal predecessors, (7000), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 7005 transitions. [2022-11-18 18:42:55,364 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 7005 transitions. Word has length 60 [2022-11-18 18:42:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:55,365 INFO L495 AbstractCegarLoop]: Abstraction has 4698 states and 7005 transitions. [2022-11-18 18:42:55,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2022-11-18 18:42:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 7005 transitions. [2022-11-18 18:42:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 18:42:55,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:55,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:55,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:42:55,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:55,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash -188990245, now seen corresponding path program 1 times [2022-11-18 18:42:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:55,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158421164] [2022-11-18 18:42:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158421164] [2022-11-18 18:42:55,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158421164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:55,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:55,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908712919] [2022-11-18 18:42:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:55,421 INFO L87 Difference]: Start difference. First operand 4698 states and 7005 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-11-18 18:42:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:55,811 INFO L93 Difference]: Finished difference Result 9239 states and 13787 transitions. [2022-11-18 18:42:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:55,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 62 [2022-11-18 18:42:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:55,830 INFO L225 Difference]: With dead ends: 9239 [2022-11-18 18:42:55,831 INFO L226 Difference]: Without dead ends: 4564 [2022-11-18 18:42:55,838 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 [2022-11-18 18:42:55,839 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 345 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:55,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 443 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:42:55,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2022-11-18 18:42:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4564. [2022-11-18 18:42:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4558 states have (on average 1.4697235629662133) internal successors, (6699), 4562 states have internal predecessors, (6699), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6704 transitions. [2022-11-18 18:42:56,142 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6704 transitions. Word has length 62 [2022-11-18 18:42:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:56,142 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 6704 transitions. [2022-11-18 18:42:56,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2022-11-18 18:42:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6704 transitions. [2022-11-18 18:42:56,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 18:42:56,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:56,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:56,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:42:56,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1119920945, now seen corresponding path program 1 times [2022-11-18 18:42:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059347377] [2022-11-18 18:42:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:56,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:56,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059347377] [2022-11-18 18:42:56,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059347377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:56,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:56,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:42:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064297730] [2022-11-18 18:42:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:56,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:56,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:56,214 INFO L87 Difference]: Start difference. First operand 4564 states and 6704 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-18 18:42:56,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:56,581 INFO L93 Difference]: Finished difference Result 9772 states and 14526 transitions. [2022-11-18 18:42:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:56,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 63 [2022-11-18 18:42:56,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:56,618 INFO L225 Difference]: With dead ends: 9772 [2022-11-18 18:42:56,618 INFO L226 Difference]: Without dead ends: 5231 [2022-11-18 18:42:56,625 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 [2022-11-18 18:42:56,627 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 309 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:56,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1002 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:42:56,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2022-11-18 18:42:56,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 3514. [2022-11-18 18:42:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3514 states, 3508 states have (on average 1.4871721778791334) internal successors, (5217), 3512 states have internal predecessors, (5217), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5222 transitions. [2022-11-18 18:42:56,902 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5222 transitions. Word has length 63 [2022-11-18 18:42:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:56,904 INFO L495 AbstractCegarLoop]: Abstraction has 3514 states and 5222 transitions. [2022-11-18 18:42:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2022-11-18 18:42:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5222 transitions. [2022-11-18 18:42:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 18:42:56,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:56,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:56,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:42:56,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1680343550, now seen corresponding path program 1 times [2022-11-18 18:42:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:56,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741601218] [2022-11-18 18:42:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:57,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:57,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741601218] [2022-11-18 18:42:57,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741601218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:57,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:57,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:42:57,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388144172] [2022-11-18 18:42:57,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:57,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:57,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:57,024 INFO L87 Difference]: Start difference. First operand 3514 states and 5222 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2022-11-18 18:42:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:58,831 INFO L93 Difference]: Finished difference Result 16672 states and 24585 transitions. [2022-11-18 18:42:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:42:58,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 65 [2022-11-18 18:42:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:58,863 INFO L225 Difference]: With dead ends: 16672 [2022-11-18 18:42:58,864 INFO L226 Difference]: Without dead ends: 13383 [2022-11-18 18:42:58,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:42:58,872 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 2121 mSDsluCounter, 2955 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:58,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 4025 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:42:58,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13383 states. [2022-11-18 18:42:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13383 to 4384. [2022-11-18 18:42:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4378 states have (on average 1.479899497487437) internal successors, (6479), 4382 states have internal predecessors, (6479), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:59,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6484 transitions. [2022-11-18 18:42:59,337 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6484 transitions. Word has length 65 [2022-11-18 18:42:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:59,337 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 6484 transitions. [2022-11-18 18:42:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2022-11-18 18:42:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6484 transitions. [2022-11-18 18:42:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 18:42:59,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:59,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:59,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:42:59,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash -807318558, now seen corresponding path program 1 times [2022-11-18 18:42:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:59,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514048691] [2022-11-18 18:42:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:59,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514048691] [2022-11-18 18:42:59,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514048691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:59,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:59,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:59,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398075160] [2022-11-18 18:42:59,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:59,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:42:59,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:59,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:42:59,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:42:59,436 INFO L87 Difference]: Start difference. First operand 4384 states and 6484 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-11-18 18:43:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:02,341 INFO L93 Difference]: Finished difference Result 30283 states and 44507 transitions. [2022-11-18 18:43:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:43:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 66 [2022-11-18 18:43:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:02,406 INFO L225 Difference]: With dead ends: 30283 [2022-11-18 18:43:02,406 INFO L226 Difference]: Without dead ends: 26124 [2022-11-18 18:43:02,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:43:02,414 INFO L413 NwaCegarLoop]: 1877 mSDtfsCounter, 3817 mSDsluCounter, 6758 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3817 SdHoareTripleChecker+Valid, 8635 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:02,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3817 Valid, 8635 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:43:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26124 states. [2022-11-18 18:43:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26124 to 4694. [2022-11-18 18:43:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4688 states have (on average 1.4699232081911262) internal successors, (6891), 4692 states have internal predecessors, (6891), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6896 transitions. [2022-11-18 18:43:03,055 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6896 transitions. Word has length 66 [2022-11-18 18:43:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:03,055 INFO L495 AbstractCegarLoop]: Abstraction has 4694 states and 6896 transitions. [2022-11-18 18:43:03,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2022-11-18 18:43:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6896 transitions. [2022-11-18 18:43:03,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 18:43:03,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:03,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:03,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:43:03,059 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:03,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:03,060 INFO L85 PathProgramCache]: Analyzing trace with hash 365229683, now seen corresponding path program 1 times [2022-11-18 18:43:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:03,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411474307] [2022-11-18 18:43:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:03,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:03,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:03,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411474307] [2022-11-18 18:43:03,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411474307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:03,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:03,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449983750] [2022-11-18 18:43:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:03,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:43:03,098 INFO L87 Difference]: Start difference. First operand 4694 states and 6896 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-11-18 18:43:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:03,670 INFO L93 Difference]: Finished difference Result 9887 states and 14496 transitions. [2022-11-18 18:43:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:03,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 79 [2022-11-18 18:43:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:03,681 INFO L225 Difference]: With dead ends: 9887 [2022-11-18 18:43:03,681 INFO L226 Difference]: Without dead ends: 5214 [2022-11-18 18:43:03,688 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 [2022-11-18 18:43:03,688 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 135 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:03,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 818 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:43:03,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2022-11-18 18:43:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5140. [2022-11-18 18:43:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5140 states, 5134 states have (on average 1.4649396182313985) internal successors, (7521), 5138 states have internal predecessors, (7521), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5140 states to 5140 states and 7526 transitions. [2022-11-18 18:43:04,311 INFO L78 Accepts]: Start accepts. Automaton has 5140 states and 7526 transitions. Word has length 79 [2022-11-18 18:43:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:04,312 INFO L495 AbstractCegarLoop]: Abstraction has 5140 states and 7526 transitions. [2022-11-18 18:43:04,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-11-18 18:43:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5140 states and 7526 transitions. [2022-11-18 18:43:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 18:43:04,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:04,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:04,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:43:04,316 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1737999967, now seen corresponding path program 1 times [2022-11-18 18:43:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:04,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173187535] [2022-11-18 18:43:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:04,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173187535] [2022-11-18 18:43:04,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173187535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:04,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:04,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:43:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668720528] [2022-11-18 18:43:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:43:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:43:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:43:04,395 INFO L87 Difference]: Start difference. First operand 5140 states and 7526 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-11-18 18:43:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:05,796 INFO L93 Difference]: Finished difference Result 13742 states and 19960 transitions. [2022-11-18 18:43:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:43:05,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 91 [2022-11-18 18:43:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:05,817 INFO L225 Difference]: With dead ends: 13742 [2022-11-18 18:43:05,817 INFO L226 Difference]: Without dead ends: 8501 [2022-11-18 18:43:05,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:05,824 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 650 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:05,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1264 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:43:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2022-11-18 18:43:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 7603. [2022-11-18 18:43:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7603 states, 7597 states have (on average 1.4359615637751744) internal successors, (10909), 7601 states have internal predecessors, (10909), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7603 states to 7603 states and 10914 transitions. [2022-11-18 18:43:06,648 INFO L78 Accepts]: Start accepts. Automaton has 7603 states and 10914 transitions. Word has length 91 [2022-11-18 18:43:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:06,648 INFO L495 AbstractCegarLoop]: Abstraction has 7603 states and 10914 transitions. [2022-11-18 18:43:06,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2022-11-18 18:43:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7603 states and 10914 transitions. [2022-11-18 18:43:06,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 18:43:06,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:06,652 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:06,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:43:06,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1393219568, now seen corresponding path program 1 times [2022-11-18 18:43:06,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:06,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119249227] [2022-11-18 18:43:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:06,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:06,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:06,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119249227] [2022-11-18 18:43:06,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119249227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:06,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:06,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389037021] [2022-11-18 18:43:06,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:06,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:06,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:06,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:43:06,713 INFO L87 Difference]: Start difference. First operand 7603 states and 10914 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-11-18 18:43:07,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:07,133 INFO L93 Difference]: Finished difference Result 10973 states and 15786 transitions. [2022-11-18 18:43:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 99 [2022-11-18 18:43:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:07,140 INFO L225 Difference]: With dead ends: 10973 [2022-11-18 18:43:07,140 INFO L226 Difference]: Without dead ends: 3373 [2022-11-18 18:43:07,148 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 [2022-11-18 18:43:07,149 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 339 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:07,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 521 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2022-11-18 18:43:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3320. [2022-11-18 18:43:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3314 states have (on average 1.347616173808087) internal successors, (4466), 3318 states have internal predecessors, (4466), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4471 transitions. [2022-11-18 18:43:07,481 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4471 transitions. Word has length 99 [2022-11-18 18:43:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:07,481 INFO L495 AbstractCegarLoop]: Abstraction has 3320 states and 4471 transitions. [2022-11-18 18:43:07,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-11-18 18:43:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4471 transitions. [2022-11-18 18:43:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:43:07,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:07,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:07,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:43:07,484 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 759271656, now seen corresponding path program 1 times [2022-11-18 18:43:07,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:07,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669185761] [2022-11-18 18:43:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:07,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669185761] [2022-11-18 18:43:07,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669185761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:07,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:07,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579451426] [2022-11-18 18:43:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:07,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:07,557 INFO L87 Difference]: Start difference. First operand 3320 states and 4471 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2022-11-18 18:43:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:08,657 INFO L93 Difference]: Finished difference Result 12700 states and 17100 transitions. [2022-11-18 18:43:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:43:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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 101 [2022-11-18 18:43:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:08,668 INFO L225 Difference]: With dead ends: 12700 [2022-11-18 18:43:08,668 INFO L226 Difference]: Without dead ends: 9557 [2022-11-18 18:43:08,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:08,675 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 1537 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:08,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 3386 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:43:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2022-11-18 18:43:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 3322. [2022-11-18 18:43:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3316 states have (on average 1.3455971049457178) internal successors, (4462), 3320 states have internal predecessors, (4462), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4467 transitions. [2022-11-18 18:43:09,180 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4467 transitions. Word has length 101 [2022-11-18 18:43:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:09,181 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 4467 transitions. [2022-11-18 18:43:09,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2022-11-18 18:43:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4467 transitions. [2022-11-18 18:43:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 18:43:09,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:09,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:09,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:43:09,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1438592349, now seen corresponding path program 1 times [2022-11-18 18:43:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:09,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834517451] [2022-11-18 18:43:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:09,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834517451] [2022-11-18 18:43:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834517451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026419805] [2022-11-18 18:43:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:09,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:09,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:43:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:09,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:43:09,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:09,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:09,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026419805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:09,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:09,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:43:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972450630] [2022-11-18 18:43:09,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:09,589 INFO L87 Difference]: Start difference. First operand 3322 states and 4467 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (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) [2022-11-18 18:43:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:10,441 INFO L93 Difference]: Finished difference Result 3961 states and 5320 transitions. [2022-11-18 18:43:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:10,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (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 103 [2022-11-18 18:43:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:10,447 INFO L225 Difference]: With dead ends: 3961 [2022-11-18 18:43:10,447 INFO L226 Difference]: Without dead ends: 3957 [2022-11-18 18:43:10,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:10,450 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 233 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:10,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 803 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-11-18 18:43:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3907. [2022-11-18 18:43:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3907 states, 3901 states have (on average 1.3424762881312484) internal successors, (5237), 3905 states have internal predecessors, (5237), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 5242 transitions. [2022-11-18 18:43:11,063 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 5242 transitions. Word has length 103 [2022-11-18 18:43:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:11,064 INFO L495 AbstractCegarLoop]: Abstraction has 3907 states and 5242 transitions. [2022-11-18 18:43:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (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) [2022-11-18 18:43:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 5242 transitions. [2022-11-18 18:43:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-18 18:43:11,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:11,068 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:11,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:43:11,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:43:11,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash 778344586, now seen corresponding path program 1 times [2022-11-18 18:43:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:11,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913445834] [2022-11-18 18:43:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:11,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913445834] [2022-11-18 18:43:11,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913445834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:11,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105174476] [2022-11-18 18:43:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:11,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:11,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:43:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:43:11,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:11,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:11,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105174476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:11,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:11,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:43:11,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093314614] [2022-11-18 18:43:11,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:11,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:11,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:11,719 INFO L87 Difference]: Start difference. First operand 3907 states and 5242 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-11-18 18:43:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:12,175 INFO L93 Difference]: Finished difference Result 6958 states and 9384 transitions. [2022-11-18 18:43:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:12,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 158 [2022-11-18 18:43:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:12,178 INFO L225 Difference]: With dead ends: 6958 [2022-11-18 18:43:12,179 INFO L226 Difference]: Without dead ends: 3056 [2022-11-18 18:43:12,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:12,185 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 264 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:12,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 422 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-11-18 18:43:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2834. [2022-11-18 18:43:12,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2828 states have (on average 1.322135785007072) internal successors, (3739), 2832 states have internal predecessors, (3739), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3744 transitions. [2022-11-18 18:43:12,651 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3744 transitions. Word has length 158 [2022-11-18 18:43:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:12,652 INFO L495 AbstractCegarLoop]: Abstraction has 2834 states and 3744 transitions. [2022-11-18 18:43:12,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-11-18 18:43:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3744 transitions. [2022-11-18 18:43:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 18:43:12,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:12,655 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:12,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:12,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:43:12,872 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1723152090, now seen corresponding path program 1 times [2022-11-18 18:43:12,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:12,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635962889] [2022-11-18 18:43:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:13,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:13,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635962889] [2022-11-18 18:43:13,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635962889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168364719] [2022-11-18 18:43:13,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:13,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:13,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:13,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:13,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:43:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:13,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:43:13,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:43:13,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:13,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168364719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:13,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:13,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:43:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410936534] [2022-11-18 18:43:13,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:13,266 INFO L87 Difference]: Start difference. First operand 2834 states and 3744 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-18 18:43:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:13,773 INFO L93 Difference]: Finished difference Result 5496 states and 7301 transitions. [2022-11-18 18:43:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:13,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 161 [2022-11-18 18:43:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:13,777 INFO L225 Difference]: With dead ends: 5496 [2022-11-18 18:43:13,777 INFO L226 Difference]: Without dead ends: 2834 [2022-11-18 18:43:13,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:13,782 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 274 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:13,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 394 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-11-18 18:43:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 2834. [2022-11-18 18:43:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2828 states have (on average 1.2881895332390383) internal successors, (3643), 2832 states have internal predecessors, (3643), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 3648 transitions. [2022-11-18 18:43:14,238 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 3648 transitions. Word has length 161 [2022-11-18 18:43:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:14,238 INFO L495 AbstractCegarLoop]: Abstraction has 2834 states and 3648 transitions. [2022-11-18 18:43:14,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-18 18:43:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 3648 transitions. [2022-11-18 18:43:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-18 18:43:14,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:14,242 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:14,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 18:43:14,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:43:14,448 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash 901617889, now seen corresponding path program 1 times [2022-11-18 18:43:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:14,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421804352] [2022-11-18 18:43:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:14,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:14,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421804352] [2022-11-18 18:43:14,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421804352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:14,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672176800] [2022-11-18 18:43:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:14,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:14,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:14,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:14,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:43:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:14,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:43:14,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:43:14,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:14,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672176800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:14,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:14,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 18:43:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418241095] [2022-11-18 18:43:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:14,753 INFO L87 Difference]: Start difference. First operand 2834 states and 3648 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-18 18:43:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:15,610 INFO L93 Difference]: Finished difference Result 6407 states and 8410 transitions. [2022-11-18 18:43:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:15,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 162 [2022-11-18 18:43:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:15,615 INFO L225 Difference]: With dead ends: 6407 [2022-11-18 18:43:15,615 INFO L226 Difference]: Without dead ends: 3745 [2022-11-18 18:43:15,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:15,618 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 205 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:15,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 664 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:43:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2022-11-18 18:43:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3657. [2022-11-18 18:43:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 3651 states have (on average 1.256368118323747) internal successors, (4587), 3655 states have internal predecessors, (4587), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 4592 transitions. [2022-11-18 18:43:16,022 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 4592 transitions. Word has length 162 [2022-11-18 18:43:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:16,022 INFO L495 AbstractCegarLoop]: Abstraction has 3657 states and 4592 transitions. [2022-11-18 18:43:16,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-18 18:43:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 4592 transitions. [2022-11-18 18:43:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-18 18:43:16,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:16,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:16,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 18:43:16,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:16,230 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:16,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash -89319700, now seen corresponding path program 1 times [2022-11-18 18:43:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:16,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910663183] [2022-11-18 18:43:16,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:16,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:16,553 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910663183] [2022-11-18 18:43:16,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910663183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:16,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263893783] [2022-11-18 18:43:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:16,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:16,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:16,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:16,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:43:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:16,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:43:16,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:17,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:43:17,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263893783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:17,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:17,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-11-18 18:43:17,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760846055] [2022-11-18 18:43:17,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:17,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:17,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:17,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:17,278 INFO L87 Difference]: Start difference. First operand 3657 states and 4592 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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) [2022-11-18 18:43:20,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:20,589 INFO L93 Difference]: Finished difference Result 18372 states and 23167 transitions. [2022-11-18 18:43:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 18:43:20,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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 164 [2022-11-18 18:43:20,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:20,612 INFO L225 Difference]: With dead ends: 18372 [2022-11-18 18:43:20,612 INFO L226 Difference]: Without dead ends: 14887 [2022-11-18 18:43:20,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 337 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:43:20,619 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 4151 mSDsluCounter, 4748 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4151 SdHoareTripleChecker+Valid, 5617 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4151 Valid, 5617 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:43:20,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14887 states. [2022-11-18 18:43:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14887 to 5182. [2022-11-18 18:43:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 5176 states have (on average 1.2612055641421946) internal successors, (6528), 5180 states have internal predecessors, (6528), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 6533 transitions. [2022-11-18 18:43:21,339 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 6533 transitions. Word has length 164 [2022-11-18 18:43:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:21,340 INFO L495 AbstractCegarLoop]: Abstraction has 5182 states and 6533 transitions. [2022-11-18 18:43:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 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) [2022-11-18 18:43:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 6533 transitions. [2022-11-18 18:43:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-18 18:43:21,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:21,343 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:21,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:21,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:21,549 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:21,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1160504422, now seen corresponding path program 1 times [2022-11-18 18:43:21,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:21,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377614020] [2022-11-18 18:43:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:43:22,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:22,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377614020] [2022-11-18 18:43:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377614020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184355205] [2022-11-18 18:43:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:22,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:22,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:22,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:22,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:43:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:43:22,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:43:23,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:43:23,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184355205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:23,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:23,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2022-11-18 18:43:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221525056] [2022-11-18 18:43:23,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:23,800 INFO L87 Difference]: Start difference. First operand 5182 states and 6533 transitions. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 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) [2022-11-18 18:43:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:28,178 INFO L93 Difference]: Finished difference Result 23920 states and 30076 transitions. [2022-11-18 18:43:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 18:43:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 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 264 [2022-11-18 18:43:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:28,206 INFO L225 Difference]: With dead ends: 23920 [2022-11-18 18:43:28,207 INFO L226 Difference]: Without dead ends: 18910 [2022-11-18 18:43:28,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 541 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 18:43:28,213 INFO L413 NwaCegarLoop]: 1466 mSDtfsCounter, 5821 mSDsluCounter, 10170 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5821 SdHoareTripleChecker+Valid, 11636 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:28,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5821 Valid, 11636 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:43:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18910 states. [2022-11-18 18:43:29,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18910 to 6581. [2022-11-18 18:43:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6581 states, 6575 states have (on average 1.2622053231939163) internal successors, (8299), 6579 states have internal predecessors, (8299), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 8304 transitions. [2022-11-18 18:43:29,404 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 8304 transitions. Word has length 264 [2022-11-18 18:43:29,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:29,405 INFO L495 AbstractCegarLoop]: Abstraction has 6581 states and 8304 transitions. [2022-11-18 18:43:29,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 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) [2022-11-18 18:43:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 8304 transitions. [2022-11-18 18:43:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-18 18:43:29,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:29,410 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:29,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:29,616 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:29,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:29,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1649884656, now seen corresponding path program 1 times [2022-11-18 18:43:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:29,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659970920] [2022-11-18 18:43:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 268 proven. 204 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:43:30,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:30,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659970920] [2022-11-18 18:43:30,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659970920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306936998] [2022-11-18 18:43:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:30,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:30,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:30,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:30,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:43:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:30,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:43:30,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:43:30,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:43:30,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306936998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:30,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:43:30,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2022-11-18 18:43:30,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364479746] [2022-11-18 18:43:30,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:30,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:30,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:30,735 INFO L87 Difference]: Start difference. First operand 6581 states and 8304 transitions. Second operand has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 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) [2022-11-18 18:43:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:32,739 INFO L93 Difference]: Finished difference Result 14921 states and 18796 transitions. [2022-11-18 18:43:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:43:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 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 365 [2022-11-18 18:43:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:32,750 INFO L225 Difference]: With dead ends: 14921 [2022-11-18 18:43:32,750 INFO L226 Difference]: Without dead ends: 8509 [2022-11-18 18:43:32,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:43:32,755 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 2134 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 3916 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:32,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 3916 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:43:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8509 states. [2022-11-18 18:43:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8509 to 6450. [2022-11-18 18:43:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6450 states, 6444 states have (on average 1.260552451893234) internal successors, (8123), 6448 states have internal predecessors, (8123), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6450 states to 6450 states and 8128 transitions. [2022-11-18 18:43:33,702 INFO L78 Accepts]: Start accepts. Automaton has 6450 states and 8128 transitions. Word has length 365 [2022-11-18 18:43:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:33,703 INFO L495 AbstractCegarLoop]: Abstraction has 6450 states and 8128 transitions. [2022-11-18 18:43:33,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 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) [2022-11-18 18:43:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6450 states and 8128 transitions. [2022-11-18 18:43:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-11-18 18:43:33,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:33,706 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:33,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:33,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 18:43:33,907 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash 212538691, now seen corresponding path program 1 times [2022-11-18 18:43:33,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:33,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478436840] [2022-11-18 18:43:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:33,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-18 18:43:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478436840] [2022-11-18 18:43:34,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478436840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:34,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:34,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:43:34,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304105129] [2022-11-18 18:43:34,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:34,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:43:34,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:43:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:43:34,016 INFO L87 Difference]: Start difference. First operand 6450 states and 8128 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-11-18 18:43:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:34,514 INFO L93 Difference]: Finished difference Result 7707 states and 9551 transitions. [2022-11-18 18:43:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:43:34,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 366 [2022-11-18 18:43:34,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:34,516 INFO L225 Difference]: With dead ends: 7707 [2022-11-18 18:43:34,517 INFO L226 Difference]: Without dead ends: 1310 [2022-11-18 18:43:34,520 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 [2022-11-18 18:43:34,521 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 134 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:34,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 396 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:43:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-11-18 18:43:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1307. [2022-11-18 18:43:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1303 states have (on average 1.091327705295472) internal successors, (1422), 1305 states have internal predecessors, (1422), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1425 transitions. [2022-11-18 18:43:34,760 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1425 transitions. Word has length 366 [2022-11-18 18:43:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:34,761 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1425 transitions. [2022-11-18 18:43:34,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-11-18 18:43:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1425 transitions. [2022-11-18 18:43:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-18 18:43:34,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:34,764 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:34,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 18:43:34,764 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1278053055, now seen corresponding path program 1 times [2022-11-18 18:43:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:34,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226883896] [2022-11-18 18:43:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-18 18:43:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:35,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226883896] [2022-11-18 18:43:35,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226883896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:35,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:35,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309245380] [2022-11-18 18:43:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:43:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:43:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:43:35,100 INFO L87 Difference]: Start difference. First operand 1307 states and 1425 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2022-11-18 18:43:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:35,840 INFO L93 Difference]: Finished difference Result 2682 states and 2939 transitions. [2022-11-18 18:43:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:43:35,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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 367 [2022-11-18 18:43:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:35,844 INFO L225 Difference]: With dead ends: 2682 [2022-11-18 18:43:35,844 INFO L226 Difference]: Without dead ends: 2177 [2022-11-18 18:43:35,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:43:35,846 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 906 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:35,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 2474 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:43:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2022-11-18 18:43:36,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1303. [2022-11-18 18:43:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 1299 states have (on average 1.0869899923017705) internal successors, (1412), 1301 states have internal predecessors, (1412), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1415 transitions. [2022-11-18 18:43:36,157 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1415 transitions. Word has length 367 [2022-11-18 18:43:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:36,158 INFO L495 AbstractCegarLoop]: Abstraction has 1303 states and 1415 transitions. [2022-11-18 18:43:36,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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) [2022-11-18 18:43:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1415 transitions. [2022-11-18 18:43:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-11-18 18:43:36,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:36,161 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:36,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 18:43:36,162 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash -393422015, now seen corresponding path program 1 times [2022-11-18 18:43:36,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:36,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270236267] [2022-11-18 18:43:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:36,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-18 18:43:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:36,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270236267] [2022-11-18 18:43:36,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270236267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:36,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:36,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:43:36,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169137467] [2022-11-18 18:43:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:43:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:43:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:43:36,340 INFO L87 Difference]: Start difference. First operand 1303 states and 1415 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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) [2022-11-18 18:43:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:36,973 INFO L93 Difference]: Finished difference Result 2148 states and 2344 transitions. [2022-11-18 18:43:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:43:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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 368 [2022-11-18 18:43:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:36,975 INFO L225 Difference]: With dead ends: 2148 [2022-11-18 18:43:36,975 INFO L226 Difference]: Without dead ends: 1641 [2022-11-18 18:43:36,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:43:36,977 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 439 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:36,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 925 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:43:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-11-18 18:43:37,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1272. [2022-11-18 18:43:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1269 states have (on average 1.0654058313632782) internal successors, (1352), 1270 states have internal predecessors, (1352), 2 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) [2022-11-18 18:43:37,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1354 transitions. [2022-11-18 18:43:37,331 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1354 transitions. Word has length 368 [2022-11-18 18:43:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1354 transitions. [2022-11-18 18:43:37,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 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) [2022-11-18 18:43:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1354 transitions. [2022-11-18 18:43:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-18 18:43:37,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:37,336 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:37,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 18:43:37,336 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1783235049, now seen corresponding path program 1 times [2022-11-18 18:43:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:37,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31105559] [2022-11-18 18:43:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 66 proven. 229 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-18 18:43:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:39,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31105559] [2022-11-18 18:43:39,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31105559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:39,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743169689] [2022-11-18 18:43:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:39,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:39,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:39,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:39,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:43:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:39,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:43:39,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 68 proven. 193 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-18 18:43:40,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 20 proven. 241 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-18 18:43:41,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743169689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:41,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:41,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 30 [2022-11-18 18:43:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590809148] [2022-11-18 18:43:41,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 18:43:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 18:43:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:43:41,199 INFO L87 Difference]: Start difference. First operand 1272 states and 1354 transitions. Second operand has 30 states, 30 states have (on average 13.833333333333334) internal successors, (415), 30 states have internal predecessors, (415), 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) [2022-11-18 18:43:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:42,595 INFO L93 Difference]: Finished difference Result 1594 states and 1700 transitions. [2022-11-18 18:43:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:43:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.833333333333334) internal successors, (415), 30 states have internal predecessors, (415), 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 426 [2022-11-18 18:43:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:42,598 INFO L225 Difference]: With dead ends: 1594 [2022-11-18 18:43:42,598 INFO L226 Difference]: Without dead ends: 1591 [2022-11-18 18:43:42,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 845 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=388, Invalid=2368, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 18:43:42,600 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2760 mSDsluCounter, 6639 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 7032 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:42,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 7032 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:43:42,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2022-11-18 18:43:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1272. [2022-11-18 18:43:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1269 states have (on average 1.0646178092986605) internal successors, (1351), 1270 states have internal predecessors, (1351), 2 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) [2022-11-18 18:43:42,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1353 transitions. [2022-11-18 18:43:42,895 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1353 transitions. Word has length 426 [2022-11-18 18:43:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:42,895 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1353 transitions. [2022-11-18 18:43:42,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.833333333333334) internal successors, (415), 30 states have internal predecessors, (415), 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) [2022-11-18 18:43:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1353 transitions. [2022-11-18 18:43:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-18 18:43:42,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:42,898 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:42,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:43,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 18:43:43,104 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:43,104 INFO L85 PathProgramCache]: Analyzing trace with hash 147062529, now seen corresponding path program 1 times [2022-11-18 18:43:43,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:43,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725927667] [2022-11-18 18:43:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 210 proven. 48 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-18 18:43:43,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:43,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725927667] [2022-11-18 18:43:43,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725927667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:43,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328590053] [2022-11-18 18:43:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:43,710 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:43,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:43:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:43,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:43:43,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 210 proven. 48 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-18 18:43:44,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 210 proven. 48 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-18 18:43:44,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328590053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:44,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:44,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2022-11-18 18:43:44,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767380362] [2022-11-18 18:43:44,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:44,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:44,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:44,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:44,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:44,571 INFO L87 Difference]: Start difference. First operand 1272 states and 1353 transitions. Second operand has 9 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 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) [2022-11-18 18:43:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:45,401 INFO L93 Difference]: Finished difference Result 1915 states and 2040 transitions. [2022-11-18 18:43:45,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:43:45,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 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 474 [2022-11-18 18:43:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:45,405 INFO L225 Difference]: With dead ends: 1915 [2022-11-18 18:43:45,405 INFO L226 Difference]: Without dead ends: 1621 [2022-11-18 18:43:45,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 951 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:43:45,407 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1127 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:45,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 3355 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:43:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2022-11-18 18:43:45,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1270. [2022-11-18 18:43:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1267 states have (on average 1.0599842146803473) internal successors, (1343), 1268 states have internal predecessors, (1343), 2 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) [2022-11-18 18:43:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1345 transitions. [2022-11-18 18:43:45,843 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1345 transitions. Word has length 474 [2022-11-18 18:43:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:45,844 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 1345 transitions. [2022-11-18 18:43:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 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) [2022-11-18 18:43:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1345 transitions. [2022-11-18 18:43:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-11-18 18:43:45,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:45,849 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:45,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:46,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 18:43:46,057 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:46,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1610767197, now seen corresponding path program 1 times [2022-11-18 18:43:46,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:46,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119662690] [2022-11-18 18:43:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:46,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 126 proven. 575 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 18:43:47,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119662690] [2022-11-18 18:43:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119662690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927300130] [2022-11-18 18:43:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:47,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:47,769 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:47,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:43:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:48,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 18:43:48,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 167 proven. 516 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 18:43:49,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 25 proven. 658 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 18:43:50,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927300130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:50,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:50,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 34 [2022-11-18 18:43:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404307652] [2022-11-18 18:43:50,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:50,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 18:43:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 18:43:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:43:50,393 INFO L87 Difference]: Start difference. First operand 1270 states and 1345 transitions. Second operand has 34 states, 34 states have (on average 20.735294117647058) internal successors, (705), 34 states have internal predecessors, (705), 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) [2022-11-18 18:43:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:52,062 INFO L93 Difference]: Finished difference Result 1523 states and 1615 transitions. [2022-11-18 18:43:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 18:43:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 20.735294117647058) internal successors, (705), 34 states have internal predecessors, (705), 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 534 [2022-11-18 18:43:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:52,065 INFO L225 Difference]: With dead ends: 1523 [2022-11-18 18:43:52,065 INFO L226 Difference]: Without dead ends: 1520 [2022-11-18 18:43:52,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1130 GetRequests, 1065 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=440, Invalid=3466, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 18:43:52,068 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 3200 mSDsluCounter, 13002 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 13634 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:52,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3200 Valid, 13634 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:43:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-11-18 18:43:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1270. [2022-11-18 18:43:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1267 states have (on average 1.059194948697711) internal successors, (1342), 1268 states have internal predecessors, (1342), 2 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) [2022-11-18 18:43:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1344 transitions. [2022-11-18 18:43:52,339 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1344 transitions. Word has length 534 [2022-11-18 18:43:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:52,340 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 1344 transitions. [2022-11-18 18:43:52,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 20.735294117647058) internal successors, (705), 34 states have internal predecessors, (705), 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) [2022-11-18 18:43:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1344 transitions. [2022-11-18 18:43:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2022-11-18 18:43:52,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:52,346 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:52,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:52,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 18:43:52,553 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:52,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1331699829, now seen corresponding path program 1 times [2022-11-18 18:43:52,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:52,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080574061] [2022-11-18 18:43:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:52,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 355 proven. 212 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-18 18:43:53,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:53,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080574061] [2022-11-18 18:43:53,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080574061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:53,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148511555] [2022-11-18 18:43:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:53,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:53,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:53,306 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:53,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:43:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:53,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 18:43:53,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 355 proven. 212 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-18 18:43:54,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:43:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 919 backedges. 355 proven. 212 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-18 18:43:54,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148511555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:43:54,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:43:54,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2022-11-18 18:43:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86035346] [2022-11-18 18:43:54,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:43:54,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:43:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:43:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:43:54,927 INFO L87 Difference]: Start difference. First operand 1270 states and 1344 transitions. Second operand has 11 states, 11 states have (on average 34.90909090909091) internal successors, (384), 11 states have internal predecessors, (384), 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) [2022-11-18 18:43:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:55,831 INFO L93 Difference]: Finished difference Result 1630 states and 1731 transitions. [2022-11-18 18:43:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:43:55,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 34.90909090909091) internal successors, (384), 11 states have internal predecessors, (384), 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 582 [2022-11-18 18:43:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:55,834 INFO L225 Difference]: With dead ends: 1630 [2022-11-18 18:43:55,834 INFO L226 Difference]: Without dead ends: 1526 [2022-11-18 18:43:55,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1169 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:43:55,836 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1216 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:55,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 5194 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:43:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2022-11-18 18:43:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1269. [2022-11-18 18:43:56,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1267 states have (on average 1.0544593528018942) internal successors, (1336), 1267 states have internal predecessors, (1336), 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) [2022-11-18 18:43:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1337 transitions. [2022-11-18 18:43:56,230 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1337 transitions. Word has length 582 [2022-11-18 18:43:56,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:56,231 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1337 transitions. [2022-11-18 18:43:56,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 34.90909090909091) internal successors, (384), 11 states have internal predecessors, (384), 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) [2022-11-18 18:43:56,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1337 transitions. [2022-11-18 18:43:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2022-11-18 18:43:56,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:56,237 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:56,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 18:43:56,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 18:43:56,438 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash 707297678, now seen corresponding path program 1 times [2022-11-18 18:43:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:56,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444010185] [2022-11-18 18:43:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 83 proven. 1033 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:43:58,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:58,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444010185] [2022-11-18 18:43:58,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444010185] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:43:58,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861320258] [2022-11-18 18:43:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:58,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:58,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:58,550 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:58,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:43:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:58,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-18 18:43:58,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 174 proven. 942 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:44:00,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 30 proven. 1086 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:44:01,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861320258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:01,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:01,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 40 [2022-11-18 18:44:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75001437] [2022-11-18 18:44:01,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:01,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 18:44:01,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:01,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 18:44:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1454, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 18:44:01,992 INFO L87 Difference]: Start difference. First operand 1269 states and 1337 transitions. Second operand has 40 states, 40 states have (on average 24.35) internal successors, (974), 40 states have internal predecessors, (974), 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) [2022-11-18 18:44:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:04,155 INFO L93 Difference]: Finished difference Result 1526 states and 1612 transitions. [2022-11-18 18:44:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:44:04,155 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 24.35) internal successors, (974), 40 states have internal predecessors, (974), 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 643 [2022-11-18 18:44:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:44:04,156 INFO L225 Difference]: With dead ends: 1526 [2022-11-18 18:44:04,156 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 18:44:04,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1289 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=608, Invalid=5712, Unknown=0, NotChecked=0, Total=6320 [2022-11-18 18:44:04,159 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 4096 mSDsluCounter, 17995 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 18797 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:44:04,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4096 Valid, 18797 Invalid, 1361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:44:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 18:44:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 18:44:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:44:04,160 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 643 [2022-11-18 18:44:04,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:44:04,160 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:44:04,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 24.35) internal successors, (974), 40 states have internal predecessors, (974), 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) [2022-11-18 18:44:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:44:04,161 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 18:44:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:44:04,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:04,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b18b0f2-9159-4e60-bded-b14df1e42a1e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:04,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 18:44:16,600 WARN L233 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 440 DAG size of output: 440 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-18 18:44:35,228 WARN L233 SmtUtils]: Spent 18.62s on a formula simplification. DAG size of input: 448 DAG size of output: 448 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-18 18:44:46,198 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 440 DAG size of output: 440 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)