./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R --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 bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 --- 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-38b53e6 [2022-11-25 15:28:13,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:28:13,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:28:13,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:28:13,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:28:13,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:28:13,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:28:13,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:28:13,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:28:13,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:28:13,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:28:13,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:28:13,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:28:13,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:28:13,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:28:13,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:28:13,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:28:13,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:28:13,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:28:13,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:28:13,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:28:13,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:28:13,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:28:13,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:28:13,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:28:13,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:28:13,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:28:13,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:28:13,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:28:13,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:28:13,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:28:13,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:28:13,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:28:13,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:28:13,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:28:13,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:28:13,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:28:13,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:28:13,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:28:13,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:28:13,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:28:13,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:28:13,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:28:13,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:28:13,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:28:13,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:28:13,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:28:13,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:28:13,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:28:13,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:28:13,203 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:28:13,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:28:13,205 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:28:13,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:28:13,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:28:13,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:28:13,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:28:13,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:28:13,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:28:13,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:28:13,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:28:13,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:28:13,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:28:13,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:28:13,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:28:13,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:28:13,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:13,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:28:13,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:28:13,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:28:13,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:28:13,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:28:13,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:28:13,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:28:13,212 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:28:13,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:28:13,212 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 [2022-11-25 15:28:13,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:28:13,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:28:13,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:28:13,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:28:13,639 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:28:13,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2022-11-25 15:28:17,343 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:28:17,866 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:28:17,867 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2022-11-25 15:28:17,907 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/data/c59b0a981/f44d4f0149584615875acad57c5b4072/FLAG4795a10c2 [2022-11-25 15:28:17,929 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/data/c59b0a981/f44d4f0149584615875acad57c5b4072 [2022-11-25 15:28:17,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:28:17,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:28:17,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:28:17,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:28:17,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:28:17,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:28:17" (1/1) ... [2022-11-25 15:28:17,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a7a176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:17, skipping insertion in model container [2022-11-25 15:28:17,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:28:17" (1/1) ... [2022-11-25 15:28:17,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:28:18,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:28:18,333 WARN L237 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_a5c71877-1af4-4961-9e8a-bac79b255510/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2022-11-25 15:28:18,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:28:18,669 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:28:18,712 WARN L237 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_a5c71877-1af4-4961-9e8a-bac79b255510/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2022-11-25 15:28:18,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:28:18,857 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:28:18,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18 WrapperNode [2022-11-25 15:28:18,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:28:18,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:28:18,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:28:18,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:28:18,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:18,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,015 INFO L138 Inliner]: procedures = 98, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 926 [2022-11-25 15:28:19,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:28:19,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:28:19,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:28:19,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:28:19,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:28:19,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:28:19,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:28:19,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:28:19,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (1/1) ... [2022-11-25 15:28:19,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:19,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:19,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:28:19,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:28:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 15:28:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 15:28:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 15:28:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 15:28:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 15:28:19,388 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 15:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 15:28:19,390 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 15:28:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 15:28:19,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 15:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 15:28:19,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 15:28:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-25 15:28:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-25 15:28:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-25 15:28:19,393 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-25 15:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 15:28:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 15:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 15:28:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 15:28:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-25 15:28:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-25 15:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-25 15:28:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-25 15:28:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 15:28:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 15:28:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-25 15:28:19,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-25 15:28:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 15:28:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 15:28:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 15:28:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 15:28:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 15:28:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 15:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 15:28:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 15:28:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 15:28:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 15:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 15:28:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 15:28:19,401 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 15:28:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 15:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 15:28:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 15:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 15:28:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 15:28:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 15:28:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 15:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 15:28:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 15:28:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-25 15:28:19,404 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-25 15:28:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:28:19,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:28:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 15:28:19,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 15:28:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-25 15:28:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-25 15:28:19,605 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:28:19,608 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:28:21,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:28:21,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:28:21,437 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:28:21,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:28:21 BoogieIcfgContainer [2022-11-25 15:28:21,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:28:21,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:28:21,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:28:21,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:28:21,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:28:17" (1/3) ... [2022-11-25 15:28:21,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cc764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:28:21, skipping insertion in model container [2022-11-25 15:28:21,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:28:18" (2/3) ... [2022-11-25 15:28:21,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cc764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:28:21, skipping insertion in model container [2022-11-25 15:28:21,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:28:21" (3/3) ... [2022-11-25 15:28:21,454 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2022-11-25 15:28:21,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:28:21,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:28:21,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:28:21,638 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;@65ad5e2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:28:21,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:28:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 488 states have internal predecessors, (777), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-25 15:28:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 15:28:21,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:21,687 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:21,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:21,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash -103685330, now seen corresponding path program 1 times [2022-11-25 15:28:21,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:21,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622928925] [2022-11-25 15:28:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:28:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 15:28:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:28:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 15:28:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:23,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622928925] [2022-11-25 15:28:23,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622928925] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:23,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558562299] [2022-11-25 15:28:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:23,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:23,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:23,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:23,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:28:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:23,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1727 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 15:28:23,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:28:23,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:23,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558562299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:23,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:23,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2022-11-25 15:28:23,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722788306] [2022-11-25 15:28:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:23,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:28:23,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:23,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:28:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:28:24,006 INFO L87 Difference]: Start difference. First operand has 603 states, 465 states have (on average 1.6709677419354838) internal successors, (777), 488 states have internal predecessors, (777), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-25 15:28:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:24,126 INFO L93 Difference]: Finished difference Result 624 states and 1023 transitions. [2022-11-25 15:28:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:28:24,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2022-11-25 15:28:24,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:24,160 INFO L225 Difference]: With dead ends: 624 [2022-11-25 15:28:24,160 INFO L226 Difference]: Without dead ends: 595 [2022-11-25 15:28:24,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:28:24,169 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:24,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-25 15:28:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-25 15:28:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 459 states have (on average 1.6688453159041394) internal successors, (766), 480 states have internal predecessors, (766), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 977 transitions. [2022-11-25 15:28:24,300 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 977 transitions. Word has length 83 [2022-11-25 15:28:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:24,302 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 977 transitions. [2022-11-25 15:28:24,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-25 15:28:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 977 transitions. [2022-11-25 15:28:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-25 15:28:24,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:24,309 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:24,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 15:28:24,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:24,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1102022690, now seen corresponding path program 1 times [2022-11-25 15:28:24,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:24,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553727216] [2022-11-25 15:28:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:28:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 15:28:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:28:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-25 15:28:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:25,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:25,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553727216] [2022-11-25 15:28:25,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553727216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678885510] [2022-11-25 15:28:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:25,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:25,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:25,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:28:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:25,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:28:26,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:26,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678885510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:26,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:26,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362117713] [2022-11-25 15:28:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:26,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:26,113 INFO L87 Difference]: Start difference. First operand 595 states and 977 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:26,248 INFO L93 Difference]: Finished difference Result 1181 states and 1946 transitions. [2022-11-25 15:28:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:26,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-11-25 15:28:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:26,256 INFO L225 Difference]: With dead ends: 1181 [2022-11-25 15:28:26,256 INFO L226 Difference]: Without dead ends: 595 [2022-11-25 15:28:26,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:26,263 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 14 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:26,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2882 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-25 15:28:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-25 15:28:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 459 states have (on average 1.6666666666666667) internal successors, (765), 480 states have internal predecessors, (765), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 976 transitions. [2022-11-25 15:28:26,317 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 976 transitions. Word has length 85 [2022-11-25 15:28:26,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:26,317 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 976 transitions. [2022-11-25 15:28:26,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 976 transitions. [2022-11-25 15:28:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 15:28:26,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:26,322 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:26,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:26,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:26,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -45899462, now seen corresponding path program 1 times [2022-11-25 15:28:26,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:26,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066440263] [2022-11-25 15:28:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:26,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 15:28:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:26,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-25 15:28:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:27,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066440263] [2022-11-25 15:28:27,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066440263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:27,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695227930] [2022-11-25 15:28:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:27,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:27,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:27,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:28:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:27,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:27,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:28:27,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:27,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695227930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:27,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:27,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:27,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345425734] [2022-11-25 15:28:27,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:27,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:27,928 INFO L87 Difference]: Start difference. First operand 595 states and 976 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:28,037 INFO L93 Difference]: Finished difference Result 1181 states and 1944 transitions. [2022-11-25 15:28:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-11-25 15:28:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:28,044 INFO L225 Difference]: With dead ends: 1181 [2022-11-25 15:28:28,045 INFO L226 Difference]: Without dead ends: 595 [2022-11-25 15:28:28,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:28,050 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 12 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:28,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2882 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-25 15:28:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2022-11-25 15:28:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 459 states have (on average 1.6644880174291938) internal successors, (764), 480 states have internal predecessors, (764), 108 states have call successors, (108), 28 states have call predecessors, (108), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 975 transitions. [2022-11-25 15:28:28,105 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 975 transitions. Word has length 87 [2022-11-25 15:28:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:28,106 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 975 transitions. [2022-11-25 15:28:28,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 975 transitions. [2022-11-25 15:28:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 15:28:28,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:28,114 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:28,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:28,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:28,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:28,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1293965662, now seen corresponding path program 1 times [2022-11-25 15:28:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:28,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675307363] [2022-11-25 15:28:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:28,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:28,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:28,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 15:28:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:28,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 15:28:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:29,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675307363] [2022-11-25 15:28:29,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675307363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236206722] [2022-11-25 15:28:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:29,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:29,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:29,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:28:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:29,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:28:29,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:29,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236206722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:29,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:29,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947324327] [2022-11-25 15:28:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:29,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:29,589 INFO L87 Difference]: Start difference. First operand 595 states and 975 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:29,729 INFO L93 Difference]: Finished difference Result 1188 states and 1951 transitions. [2022-11-25 15:28:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:29,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-11-25 15:28:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:29,736 INFO L225 Difference]: With dead ends: 1188 [2022-11-25 15:28:29,736 INFO L226 Difference]: Without dead ends: 604 [2022-11-25 15:28:29,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:29,748 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 20 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:29,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2882 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-25 15:28:29,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-11-25 15:28:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 467 states have (on average 1.6616702355460387) internal successors, (776), 488 states have internal predecessors, (776), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 987 transitions. [2022-11-25 15:28:29,804 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 987 transitions. Word has length 89 [2022-11-25 15:28:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:29,805 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 987 transitions. [2022-11-25 15:28:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 987 transitions. [2022-11-25 15:28:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 15:28:29,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:29,815 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:29,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:30,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:30,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:30,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1933603326, now seen corresponding path program 1 times [2022-11-25 15:28:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:30,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894335079] [2022-11-25 15:28:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 15:28:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 15:28:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 15:28:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:30,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:30,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894335079] [2022-11-25 15:28:30,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894335079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:30,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233392406] [2022-11-25 15:28:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:30,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:30,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:30,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:28:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:31,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:28:31,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:31,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233392406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:31,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:31,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602014319] [2022-11-25 15:28:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:31,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:31,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:31,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:31,244 INFO L87 Difference]: Start difference. First operand 604 states and 987 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:31,352 INFO L93 Difference]: Finished difference Result 1190 states and 1952 transitions. [2022-11-25 15:28:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:31,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-11-25 15:28:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:31,360 INFO L225 Difference]: With dead ends: 1190 [2022-11-25 15:28:31,360 INFO L226 Difference]: Without dead ends: 604 [2022-11-25 15:28:31,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:31,365 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 18 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:31,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2882 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-25 15:28:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-11-25 15:28:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 467 states have (on average 1.6595289079229123) internal successors, (775), 488 states have internal predecessors, (775), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 986 transitions. [2022-11-25 15:28:31,398 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 986 transitions. Word has length 90 [2022-11-25 15:28:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:31,399 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 986 transitions. [2022-11-25 15:28:31,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 986 transitions. [2022-11-25 15:28:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-25 15:28:31,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:31,402 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:31,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:31,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:31,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1917731546, now seen corresponding path program 1 times [2022-11-25 15:28:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:31,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093561274] [2022-11-25 15:28:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:31,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 15:28:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-25 15:28:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 15:28:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093561274] [2022-11-25 15:28:32,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093561274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048807112] [2022-11-25 15:28:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:32,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:32,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:28:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:32,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:32,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:28:32,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:32,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048807112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:32,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:32,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159135928] [2022-11-25 15:28:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:32,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:32,868 INFO L87 Difference]: Start difference. First operand 604 states and 986 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:32,984 INFO L93 Difference]: Finished difference Result 1190 states and 1951 transitions. [2022-11-25 15:28:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-11-25 15:28:32,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:32,992 INFO L225 Difference]: With dead ends: 1190 [2022-11-25 15:28:32,993 INFO L226 Difference]: Without dead ends: 604 [2022-11-25 15:28:32,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:32,998 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 17 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:32,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2882 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-25 15:28:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-11-25 15:28:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 467 states have (on average 1.657387580299786) internal successors, (774), 488 states have internal predecessors, (774), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 985 transitions. [2022-11-25 15:28:33,033 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 985 transitions. Word has length 91 [2022-11-25 15:28:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:33,033 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 985 transitions. [2022-11-25 15:28:33,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 985 transitions. [2022-11-25 15:28:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 15:28:33,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:33,036 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:33,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:33,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:33,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1876786686, now seen corresponding path program 1 times [2022-11-25 15:28:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:33,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799370948] [2022-11-25 15:28:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 15:28:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-25 15:28:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:28:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799370948] [2022-11-25 15:28:34,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799370948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:34,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738858442] [2022-11-25 15:28:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:34,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:34,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:34,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:28:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:34,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:34,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:34,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738858442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765949607] [2022-11-25 15:28:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:34,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:34,612 INFO L87 Difference]: Start difference. First operand 604 states and 985 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:34,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:34,806 INFO L93 Difference]: Finished difference Result 1201 states and 1972 transitions. [2022-11-25 15:28:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:34,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2022-11-25 15:28:34,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:34,813 INFO L225 Difference]: With dead ends: 1201 [2022-11-25 15:28:34,814 INFO L226 Difference]: Without dead ends: 604 [2022-11-25 15:28:34,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:34,818 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 135 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:34,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2699 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-25 15:28:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-11-25 15:28:34,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 467 states have (on average 1.6466809421841542) internal successors, (769), 488 states have internal predecessors, (769), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 980 transitions. [2022-11-25 15:28:34,848 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 980 transitions. Word has length 92 [2022-11-25 15:28:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:34,848 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 980 transitions. [2022-11-25 15:28:34,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 980 transitions. [2022-11-25 15:28:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-25 15:28:34,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:34,851 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:34,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:35,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:35,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1817577380, now seen corresponding path program 1 times [2022-11-25 15:28:35,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:35,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31404846] [2022-11-25 15:28:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 15:28:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 15:28:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:28:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:35,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31404846] [2022-11-25 15:28:35,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31404846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:35,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015262062] [2022-11-25 15:28:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:35,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:35,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:35,805 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:35,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 15:28:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:36,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:36,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:36,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:36,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015262062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:36,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:36,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286039418] [2022-11-25 15:28:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:36,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:36,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:36,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:36,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:36,326 INFO L87 Difference]: Start difference. First operand 604 states and 980 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:36,513 INFO L93 Difference]: Finished difference Result 1201 states and 1962 transitions. [2022-11-25 15:28:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:36,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-11-25 15:28:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:36,521 INFO L225 Difference]: With dead ends: 1201 [2022-11-25 15:28:36,521 INFO L226 Difference]: Without dead ends: 604 [2022-11-25 15:28:36,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:36,525 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 129 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:36,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2699 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-25 15:28:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-11-25 15:28:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 467 states have (on average 1.6359743040685224) internal successors, (764), 488 states have internal predecessors, (764), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 975 transitions. [2022-11-25 15:28:36,555 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 975 transitions. Word has length 94 [2022-11-25 15:28:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:36,555 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 975 transitions. [2022-11-25 15:28:36,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 975 transitions. [2022-11-25 15:28:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-25 15:28:36,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:36,558 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:36,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 15:28:36,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash -688253470, now seen corresponding path program 1 times [2022-11-25 15:28:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:36,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581683582] [2022-11-25 15:28:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 15:28:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 15:28:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:28:37,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581683582] [2022-11-25 15:28:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581683582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842209371] [2022-11-25 15:28:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:37,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:37,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:37,525 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:37,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 15:28:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:38,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:38,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842209371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:38,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:38,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590647591] [2022-11-25 15:28:38,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:38,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:38,050 INFO L87 Difference]: Start difference. First operand 604 states and 975 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:38,303 INFO L93 Difference]: Finished difference Result 1237 states and 2011 transitions. [2022-11-25 15:28:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-11-25 15:28:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:38,311 INFO L225 Difference]: With dead ends: 1237 [2022-11-25 15:28:38,312 INFO L226 Difference]: Without dead ends: 655 [2022-11-25 15:28:38,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:38,318 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 179 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:38,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2709 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:28:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-25 15:28:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-11-25 15:28:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 517 states have (on average 1.6421663442940038) internal successors, (849), 538 states have internal predecessors, (849), 108 states have call successors, (108), 30 states have call predecessors, (108), 29 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1060 transitions. [2022-11-25 15:28:38,353 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1060 transitions. Word has length 96 [2022-11-25 15:28:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:38,354 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1060 transitions. [2022-11-25 15:28:38,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1060 transitions. [2022-11-25 15:28:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 15:28:38,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:38,357 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:38,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:38,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:38,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1073259110, now seen corresponding path program 1 times [2022-11-25 15:28:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:38,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36277363] [2022-11-25 15:28:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:38,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:28:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:28:39,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36277363] [2022-11-25 15:28:39,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36277363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:39,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405869341] [2022-11-25 15:28:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:39,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:39,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:39,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 15:28:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:39,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:39,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:39,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405869341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:39,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:39,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66337343] [2022-11-25 15:28:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:39,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:39,891 INFO L87 Difference]: Start difference. First operand 655 states and 1060 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:40,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:40,212 INFO L93 Difference]: Finished difference Result 1252 states and 2035 transitions. [2022-11-25 15:28:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-11-25 15:28:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:40,219 INFO L225 Difference]: With dead ends: 1252 [2022-11-25 15:28:40,219 INFO L226 Difference]: Without dead ends: 655 [2022-11-25 15:28:40,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:40,224 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 173 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:40,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2709 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:28:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-25 15:28:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-11-25 15:28:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 517 states have (on average 1.632495164410058) internal successors, (844), 538 states have internal predecessors, (844), 108 states have call successors, (108), 30 states have call predecessors, (108), 29 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-25 15:28:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1055 transitions. [2022-11-25 15:28:40,257 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1055 transitions. Word has length 97 [2022-11-25 15:28:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:40,258 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1055 transitions. [2022-11-25 15:28:40,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:40,258 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1055 transitions. [2022-11-25 15:28:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 15:28:40,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:40,260 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:40,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:40,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 15:28:40,470 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:40,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -400958683, now seen corresponding path program 1 times [2022-11-25 15:28:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:40,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060053297] [2022-11-25 15:28:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:40,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:40,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:28:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:41,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:28:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060053297] [2022-11-25 15:28:41,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060053297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:41,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871396884] [2022-11-25 15:28:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:41,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:41,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:41,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 15:28:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:41,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:28:41,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:41,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:41,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871396884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:41,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:41,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-25 15:28:41,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343189592] [2022-11-25 15:28:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:41,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:28:41,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:28:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:28:41,886 INFO L87 Difference]: Start difference. First operand 655 states and 1055 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:42,130 INFO L93 Difference]: Finished difference Result 1275 states and 2065 transitions. [2022-11-25 15:28:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:28:42,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-11-25 15:28:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:42,138 INFO L225 Difference]: With dead ends: 1275 [2022-11-25 15:28:42,138 INFO L226 Difference]: Without dead ends: 693 [2022-11-25 15:28:42,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:28:42,143 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 177 mSDsluCounter, 5557 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6501 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:42,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6501 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-25 15:28:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 674. [2022-11-25 15:28:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 533 states have (on average 1.6322701688555348) internal successors, (870), 556 states have internal predecessors, (870), 109 states have call successors, (109), 30 states have call predecessors, (109), 31 states have return successors, (106), 101 states have call predecessors, (106), 104 states have call successors, (106) [2022-11-25 15:28:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1085 transitions. [2022-11-25 15:28:42,178 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1085 transitions. Word has length 97 [2022-11-25 15:28:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:42,178 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1085 transitions. [2022-11-25 15:28:42,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:42,179 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1085 transitions. [2022-11-25 15:28:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 15:28:42,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:42,181 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:42,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 15:28:42,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -972209916, now seen corresponding path program 1 times [2022-11-25 15:28:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:42,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667638332] [2022-11-25 15:28:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:42,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:43,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-25 15:28:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:28:43,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:43,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667638332] [2022-11-25 15:28:43,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667638332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:43,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763716018] [2022-11-25 15:28:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:43,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:43,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:43,137 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:43,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 15:28:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:43,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:43,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 15:28:43,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:43,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763716018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:43,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:43,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-25 15:28:43,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026674317] [2022-11-25 15:28:43,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:28:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:28:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:28:43,708 INFO L87 Difference]: Start difference. First operand 674 states and 1085 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:43,860 INFO L93 Difference]: Finished difference Result 1213 states and 1965 transitions. [2022-11-25 15:28:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:28:43,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2022-11-25 15:28:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:43,867 INFO L225 Difference]: With dead ends: 1213 [2022-11-25 15:28:43,867 INFO L226 Difference]: Without dead ends: 698 [2022-11-25 15:28:43,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:28:43,873 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 134 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:43,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5630 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-25 15:28:43,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 693. [2022-11-25 15:28:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 549 states have (on average 1.6320582877959928) internal successors, (896), 574 states have internal predecessors, (896), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-11-25 15:28:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1115 transitions. [2022-11-25 15:28:43,916 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1115 transitions. Word has length 97 [2022-11-25 15:28:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:43,918 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1115 transitions. [2022-11-25 15:28:43,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1115 transitions. [2022-11-25 15:28:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:28:43,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:43,923 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:43,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 15:28:44,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1623035095, now seen corresponding path program 1 times [2022-11-25 15:28:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913478857] [2022-11-25 15:28:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 15:28:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:28:44,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:44,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913478857] [2022-11-25 15:28:44,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913478857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:44,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148451966] [2022-11-25 15:28:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:44,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:44,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:44,792 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:44,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 15:28:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:45,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:45,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 15:28:45,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:45,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148451966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:45,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:45,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-11-25 15:28:45,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422597952] [2022-11-25 15:28:45,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:28:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:28:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:28:45,381 INFO L87 Difference]: Start difference. First operand 693 states and 1115 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:45,535 INFO L93 Difference]: Finished difference Result 1243 states and 2016 transitions. [2022-11-25 15:28:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:28:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-25 15:28:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:45,542 INFO L225 Difference]: With dead ends: 1243 [2022-11-25 15:28:45,543 INFO L226 Difference]: Without dead ends: 728 [2022-11-25 15:28:45,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:28:45,547 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 143 mSDsluCounter, 4664 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:45,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5620 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-25 15:28:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 693. [2022-11-25 15:28:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 549 states have (on average 1.6320582877959928) internal successors, (896), 574 states have internal predecessors, (896), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-11-25 15:28:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1115 transitions. [2022-11-25 15:28:45,584 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1115 transitions. Word has length 98 [2022-11-25 15:28:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:45,584 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1115 transitions. [2022-11-25 15:28:45,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1115 transitions. [2022-11-25 15:28:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:28:45,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:45,588 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:45,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:45,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:45,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1800818775, now seen corresponding path program 1 times [2022-11-25 15:28:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:45,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326931590] [2022-11-25 15:28:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:45,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 15:28:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:28:46,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326931590] [2022-11-25 15:28:46,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326931590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:46,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517319657] [2022-11-25 15:28:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:46,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:46,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:46,457 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:46,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 15:28:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:46,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:28:46,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 15:28:47,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:47,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517319657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:47,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:47,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-25 15:28:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137652232] [2022-11-25 15:28:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:28:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:28:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:28:47,117 INFO L87 Difference]: Start difference. First operand 693 states and 1115 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:47,389 INFO L93 Difference]: Finished difference Result 1228 states and 1990 transitions. [2022-11-25 15:28:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:28:47,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-25 15:28:47,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:47,398 INFO L225 Difference]: With dead ends: 1228 [2022-11-25 15:28:47,398 INFO L226 Difference]: Without dead ends: 713 [2022-11-25 15:28:47,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:28:47,404 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 177 mSDsluCounter, 5563 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6509 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:47,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6509 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-25 15:28:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 693. [2022-11-25 15:28:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 549 states have (on average 1.6320582877959928) internal successors, (896), 574 states have internal predecessors, (896), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-11-25 15:28:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1115 transitions. [2022-11-25 15:28:47,446 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1115 transitions. Word has length 98 [2022-11-25 15:28:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:47,447 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1115 transitions. [2022-11-25 15:28:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1115 transitions. [2022-11-25 15:28:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 15:28:47,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:47,451 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:47,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:47,660 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:47,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 23955926, now seen corresponding path program 1 times [2022-11-25 15:28:47,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:47,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067804913] [2022-11-25 15:28:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 15:28:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 15:28:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 15:28:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:48,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067804913] [2022-11-25 15:28:48,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067804913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:48,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140320218] [2022-11-25 15:28:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:48,307 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:48,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 15:28:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:48,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:48,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:28:48,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:48,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140320218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:48,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:48,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57936320] [2022-11-25 15:28:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:48,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:48,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:48,805 INFO L87 Difference]: Start difference. First operand 693 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:48,888 INFO L93 Difference]: Finished difference Result 1280 states and 2075 transitions. [2022-11-25 15:28:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:28:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2022-11-25 15:28:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:48,895 INFO L225 Difference]: With dead ends: 1280 [2022-11-25 15:28:48,895 INFO L226 Difference]: Without dead ends: 693 [2022-11-25 15:28:48,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:48,901 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 23 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:48,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2851 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-25 15:28:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2022-11-25 15:28:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 549 states have (on average 1.6247723132969034) internal successors, (892), 574 states have internal predecessors, (892), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-11-25 15:28:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1111 transitions. [2022-11-25 15:28:48,933 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1111 transitions. Word has length 98 [2022-11-25 15:28:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:48,934 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1111 transitions. [2022-11-25 15:28:48,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1111 transitions. [2022-11-25 15:28:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 15:28:48,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:48,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:48,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:49,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 15:28:49,146 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1482672964, now seen corresponding path program 1 times [2022-11-25 15:28:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:49,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637896876] [2022-11-25 15:28:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:28:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:28:49,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:49,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637896876] [2022-11-25 15:28:49,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637896876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:49,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34562774] [2022-11-25 15:28:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:49,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:49,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:49,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:49,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 15:28:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:50,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 15:28:50,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 15:28:50,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:50,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34562774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:50,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:50,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2022-11-25 15:28:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410419008] [2022-11-25 15:28:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:50,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:28:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:28:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:28:50,441 INFO L87 Difference]: Start difference. First operand 693 states and 1111 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:50,681 INFO L93 Difference]: Finished difference Result 1228 states and 1987 transitions. [2022-11-25 15:28:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:28:50,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2022-11-25 15:28:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:50,688 INFO L225 Difference]: With dead ends: 1228 [2022-11-25 15:28:50,688 INFO L226 Difference]: Without dead ends: 713 [2022-11-25 15:28:50,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:28:50,693 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 185 mSDsluCounter, 5526 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:50,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6466 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:28:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-25 15:28:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 693. [2022-11-25 15:28:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 549 states have (on average 1.6247723132969034) internal successors, (892), 574 states have internal predecessors, (892), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-11-25 15:28:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1111 transitions. [2022-11-25 15:28:50,730 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1111 transitions. Word has length 99 [2022-11-25 15:28:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:50,731 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1111 transitions. [2022-11-25 15:28:50,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:28:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1111 transitions. [2022-11-25 15:28:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 15:28:50,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:50,734 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:50,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:50,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 15:28:50,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:50,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1298454258, now seen corresponding path program 1 times [2022-11-25 15:28:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:50,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592633287] [2022-11-25 15:28:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:50,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:28:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 15:28:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:51,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592633287] [2022-11-25 15:28:51,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592633287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:51,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146046132] [2022-11-25 15:28:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:51,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:51,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:51,634 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:51,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 15:28:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 1736 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:28:52,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 15:28:52,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:52,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146046132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:52,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:52,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-25 15:28:52,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350302114] [2022-11-25 15:28:52,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:52,133 INFO L87 Difference]: Start difference. First operand 693 states and 1111 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:52,218 INFO L93 Difference]: Finished difference Result 1336 states and 2157 transitions. [2022-11-25 15:28:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:52,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-11-25 15:28:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:52,224 INFO L225 Difference]: With dead ends: 1336 [2022-11-25 15:28:52,225 INFO L226 Difference]: Without dead ends: 729 [2022-11-25 15:28:52,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:28:52,230 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 38 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:52,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2827 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:28:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-11-25 15:28:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 717. [2022-11-25 15:28:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 573 states have (on average 1.6055846422338569) internal successors, (920), 598 states have internal predecessors, (920), 110 states have call successors, (110), 30 states have call predecessors, (110), 33 states have return successors, (109), 102 states have call predecessors, (109), 105 states have call successors, (109) [2022-11-25 15:28:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1139 transitions. [2022-11-25 15:28:52,265 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1139 transitions. Word has length 100 [2022-11-25 15:28:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:52,266 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1139 transitions. [2022-11-25 15:28:52,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 15:28:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1139 transitions. [2022-11-25 15:28:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 15:28:52,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:52,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 15:28:52,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:52,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 15:28:52,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:28:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1496285135, now seen corresponding path program 1 times [2022-11-25 15:28:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:28:52,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587525989] [2022-11-25 15:28:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:28:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:28:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:28:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:28:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:28:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:53,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:28:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:28:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 15:28:53,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:28:53,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587525989] [2022-11-25 15:28:53,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587525989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:28:53,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143717155] [2022-11-25 15:28:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:53,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:28:53,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:28:53,092 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:28:53,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-25 15:28:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:53,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:53,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 15:28:54,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:54,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143717155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:54,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:28:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-25 15:28:54,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707177411] [2022-11-25 15:28:54,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:54,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:28:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:28:54,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:28:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:28:54,154 INFO L87 Difference]: Start difference. First operand 717 states and 1139 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:29:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:00,120 INFO L93 Difference]: Finished difference Result 2352 states and 3855 transitions. [2022-11-25 15:29:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:29:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-25 15:29:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:00,138 INFO L225 Difference]: With dead ends: 2352 [2022-11-25 15:29:00,138 INFO L226 Difference]: Without dead ends: 1842 [2022-11-25 15:29:00,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:00,145 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 4148 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 4535 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 5375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 4535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:00,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 1808 Invalid, 5375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [840 Valid, 4535 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-25 15:29:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2022-11-25 15:29:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1655. [2022-11-25 15:29:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1306 states have (on average 1.6424196018376722) internal successors, (2145), 1349 states have internal predecessors, (2145), 277 states have call successors, (277), 66 states have call predecessors, (277), 71 states have return successors, (286), 254 states have call predecessors, (286), 272 states have call successors, (286) [2022-11-25 15:29:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2708 transitions. [2022-11-25 15:29:00,241 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2708 transitions. Word has length 100 [2022-11-25 15:29:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:00,241 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2708 transitions. [2022-11-25 15:29:00,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-25 15:29:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2708 transitions. [2022-11-25 15:29:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-25 15:29:00,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:00,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:00,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-25 15:29:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 15:29:00,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash 544463453, now seen corresponding path program 1 times [2022-11-25 15:29:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473795235] [2022-11-25 15:29:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:29:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 15:29:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 15:29:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 15:29:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 15:29:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-25 15:29:01,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:01,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473795235] [2022-11-25 15:29:01,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473795235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766284719] [2022-11-25 15:29:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:01,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:01,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:01,322 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:01,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-25 15:29:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:01,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:02,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:02,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766284719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:02,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:02,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-25 15:29:02,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762839812] [2022-11-25 15:29:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:02,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:02,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:02,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:02,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:02,037 INFO L87 Difference]: Start difference. First operand 1655 states and 2708 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:02,774 INFO L93 Difference]: Finished difference Result 3127 states and 5231 transitions. [2022-11-25 15:29:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:29:02,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2022-11-25 15:29:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:02,791 INFO L225 Difference]: With dead ends: 3127 [2022-11-25 15:29:02,791 INFO L226 Difference]: Without dead ends: 1679 [2022-11-25 15:29:02,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:02,803 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 897 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:02,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2406 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:29:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2022-11-25 15:29:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1679. [2022-11-25 15:29:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1327 states have (on average 1.643556895252449) internal successors, (2181), 1370 states have internal predecessors, (2181), 277 states have call successors, (277), 69 states have call predecessors, (277), 74 states have return successors, (289), 254 states have call predecessors, (289), 272 states have call successors, (289) [2022-11-25 15:29:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2747 transitions. [2022-11-25 15:29:02,918 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2747 transitions. Word has length 155 [2022-11-25 15:29:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:02,918 INFO L495 AbstractCegarLoop]: Abstraction has 1679 states and 2747 transitions. [2022-11-25 15:29:02,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2747 transitions. [2022-11-25 15:29:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-25 15:29:02,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:02,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:02,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:03,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:03,137 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1739402509, now seen corresponding path program 1 times [2022-11-25 15:29:03,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:03,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559636414] [2022-11-25 15:29:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:03,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 15:29:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 15:29:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 15:29:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-25 15:29:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 15:29:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:04,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:04,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559636414] [2022-11-25 15:29:04,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559636414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:04,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208875325] [2022-11-25 15:29:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:04,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:04,069 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:04,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 15:29:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:04,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:04,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:04,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:04,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208875325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:04,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:04,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-25 15:29:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982743721] [2022-11-25 15:29:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:04,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:04,794 INFO L87 Difference]: Start difference. First operand 1679 states and 2747 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:05,567 INFO L93 Difference]: Finished difference Result 3175 states and 5300 transitions. [2022-11-25 15:29:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:29:05,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2022-11-25 15:29:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:05,583 INFO L225 Difference]: With dead ends: 3175 [2022-11-25 15:29:05,583 INFO L226 Difference]: Without dead ends: 1703 [2022-11-25 15:29:05,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:05,595 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 897 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:05,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2406 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:29:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-11-25 15:29:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2022-11-25 15:29:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1348 states have (on average 1.6446587537091988) internal successors, (2217), 1391 states have internal predecessors, (2217), 277 states have call successors, (277), 72 states have call predecessors, (277), 77 states have return successors, (292), 254 states have call predecessors, (292), 272 states have call successors, (292) [2022-11-25 15:29:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2786 transitions. [2022-11-25 15:29:05,693 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2786 transitions. Word has length 157 [2022-11-25 15:29:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:05,693 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2786 transitions. [2022-11-25 15:29:05,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2786 transitions. [2022-11-25 15:29:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-25 15:29:05,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:05,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:05,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:05,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:05,911 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash -555529443, now seen corresponding path program 1 times [2022-11-25 15:29:05,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:05,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529796037] [2022-11-25 15:29:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:29:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 15:29:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-25 15:29:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-25 15:29:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 15:29:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 15:29:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:06,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529796037] [2022-11-25 15:29:06,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529796037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:06,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188640973] [2022-11-25 15:29:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:06,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:06,845 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:06,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 15:29:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:07,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:07,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:07,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:07,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188640973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:07,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:07,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-25 15:29:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445681073] [2022-11-25 15:29:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:07,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:07,543 INFO L87 Difference]: Start difference. First operand 1703 states and 2786 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:08,240 INFO L93 Difference]: Finished difference Result 3223 states and 5369 transitions. [2022-11-25 15:29:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:29:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2022-11-25 15:29:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:08,254 INFO L225 Difference]: With dead ends: 3223 [2022-11-25 15:29:08,254 INFO L226 Difference]: Without dead ends: 1727 [2022-11-25 15:29:08,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:08,263 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 886 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:08,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 2406 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:29:08,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-11-25 15:29:08,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1727. [2022-11-25 15:29:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1369 states have (on average 1.64572680788897) internal successors, (2253), 1412 states have internal predecessors, (2253), 277 states have call successors, (277), 75 states have call predecessors, (277), 80 states have return successors, (295), 254 states have call predecessors, (295), 272 states have call successors, (295) [2022-11-25 15:29:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2825 transitions. [2022-11-25 15:29:08,373 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2825 transitions. Word has length 159 [2022-11-25 15:29:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:08,374 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2825 transitions. [2022-11-25 15:29:08,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2825 transitions. [2022-11-25 15:29:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-25 15:29:08,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:08,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:08,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-25 15:29:08,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:08,591 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:08,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1668204262, now seen corresponding path program 1 times [2022-11-25 15:29:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:08,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431976579] [2022-11-25 15:29:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:08,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:29:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 15:29:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:29:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 15:29:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:29:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:29:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 15:29:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431976579] [2022-11-25 15:29:09,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431976579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:09,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871679907] [2022-11-25 15:29:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:09,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:09,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:09,425 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:09,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-25 15:29:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:09,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:29:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 15:29:10,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:10,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871679907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:10,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:10,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-25 15:29:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054416595] [2022-11-25 15:29:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:10,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:29:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:29:10,143 INFO L87 Difference]: Start difference. First operand 1727 states and 2825 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 15:29:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:14,508 INFO L93 Difference]: Finished difference Result 4667 states and 7681 transitions. [2022-11-25 15:29:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:29:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 160 [2022-11-25 15:29:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:14,532 INFO L225 Difference]: With dead ends: 4667 [2022-11-25 15:29:14,533 INFO L226 Difference]: Without dead ends: 2960 [2022-11-25 15:29:14,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-11-25 15:29:14,545 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1868 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 6095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:14,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 1984 Invalid, 6095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 15:29:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2022-11-25 15:29:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2740. [2022-11-25 15:29:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2148 states have (on average 1.62756052141527) internal successors, (3496), 2200 states have internal predecessors, (3496), 455 states have call successors, (455), 117 states have call predecessors, (455), 136 states have return successors, (513), 433 states have call predecessors, (513), 450 states have call successors, (513) [2022-11-25 15:29:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 4464 transitions. [2022-11-25 15:29:14,715 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 4464 transitions. Word has length 160 [2022-11-25 15:29:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:14,715 INFO L495 AbstractCegarLoop]: Abstraction has 2740 states and 4464 transitions. [2022-11-25 15:29:14,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 15:29:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 4464 transitions. [2022-11-25 15:29:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-25 15:29:14,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:14,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:14,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:14,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:14,934 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash 524453481, now seen corresponding path program 1 times [2022-11-25 15:29:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:14,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196560629] [2022-11-25 15:29:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 15:29:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-25 15:29:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 15:29:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 15:29:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 15:29:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-25 15:29:15,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:15,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196560629] [2022-11-25 15:29:15,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196560629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:15,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239209618] [2022-11-25 15:29:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:15,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:15,752 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:15,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 15:29:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:16,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:16,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:16,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:16,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239209618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:16,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:16,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-25 15:29:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639352949] [2022-11-25 15:29:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:16,435 INFO L87 Difference]: Start difference. First operand 2740 states and 4464 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:17,170 INFO L93 Difference]: Finished difference Result 5321 states and 8815 transitions. [2022-11-25 15:29:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:29:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 161 [2022-11-25 15:29:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:17,213 INFO L225 Difference]: With dead ends: 5321 [2022-11-25 15:29:17,214 INFO L226 Difference]: Without dead ends: 2788 [2022-11-25 15:29:17,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:17,231 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 872 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:17,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 2406 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:29:17,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2022-11-25 15:29:17,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2788. [2022-11-25 15:29:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2190 states have (on average 1.6292237442922375) internal successors, (3568), 2242 states have internal predecessors, (3568), 455 states have call successors, (455), 123 states have call predecessors, (455), 142 states have return successors, (518), 433 states have call predecessors, (518), 450 states have call successors, (518) [2022-11-25 15:29:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 4541 transitions. [2022-11-25 15:29:17,411 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 4541 transitions. Word has length 161 [2022-11-25 15:29:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:17,413 INFO L495 AbstractCegarLoop]: Abstraction has 2788 states and 4541 transitions. [2022-11-25 15:29:17,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 4541 transitions. [2022-11-25 15:29:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 15:29:17,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:17,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:17,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 15:29:17,632 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1076516129, now seen corresponding path program 1 times [2022-11-25 15:29:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:17,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651403373] [2022-11-25 15:29:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:17,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:29:18,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:18,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651403373] [2022-11-25 15:29:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651403373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:18,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544389411] [2022-11-25 15:29:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:18,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:18,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:18,511 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:18,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-25 15:29:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:18,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:18,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 15:29:19,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:19,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544389411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:19,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:19,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2022-11-25 15:29:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516184818] [2022-11-25 15:29:19,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:19,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:19,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:19,279 INFO L87 Difference]: Start difference. First operand 2788 states and 4541 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 15:29:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:19,952 INFO L93 Difference]: Finished difference Result 2903 states and 4731 transitions. [2022-11-25 15:29:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 163 [2022-11-25 15:29:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:19,971 INFO L225 Difference]: With dead ends: 2903 [2022-11-25 15:29:19,971 INFO L226 Difference]: Without dead ends: 2888 [2022-11-25 15:29:19,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:19,976 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 876 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:19,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2450 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:29:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2022-11-25 15:29:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2797. [2022-11-25 15:29:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2199 states have (on average 1.6266484765802638) internal successors, (3577), 2251 states have internal predecessors, (3577), 455 states have call successors, (455), 123 states have call predecessors, (455), 142 states have return successors, (518), 433 states have call predecessors, (518), 450 states have call successors, (518) [2022-11-25 15:29:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4550 transitions. [2022-11-25 15:29:20,162 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4550 transitions. Word has length 163 [2022-11-25 15:29:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:20,163 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4550 transitions. [2022-11-25 15:29:20,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-25 15:29:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4550 transitions. [2022-11-25 15:29:20,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 15:29:20,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:20,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:20,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:20,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 15:29:20,382 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash 160901498, now seen corresponding path program 1 times [2022-11-25 15:29:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:20,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714667721] [2022-11-25 15:29:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:20,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 15:29:21,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714667721] [2022-11-25 15:29:21,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714667721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:21,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641730475] [2022-11-25 15:29:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:21,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:21,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:21,246 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:21,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-25 15:29:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:21,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:29:21,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 15:29:21,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:21,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641730475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:21,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:21,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-25 15:29:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844266663] [2022-11-25 15:29:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:21,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:29:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:21,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:29:21,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:21,928 INFO L87 Difference]: Start difference. First operand 2797 states and 4550 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:22,590 INFO L93 Difference]: Finished difference Result 3037 states and 4888 transitions. [2022-11-25 15:29:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:29:22,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2022-11-25 15:29:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:22,611 INFO L225 Difference]: With dead ends: 3037 [2022-11-25 15:29:22,611 INFO L226 Difference]: Without dead ends: 3022 [2022-11-25 15:29:22,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:29:22,615 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 930 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3811 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:22,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 3811 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:29:22,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2022-11-25 15:29:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 2963. [2022-11-25 15:29:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2333 states have (on average 1.6206600942991856) internal successors, (3781), 2385 states have internal predecessors, (3781), 471 states have call successors, (471), 141 states have call predecessors, (471), 158 states have return successors, (537), 447 states have call predecessors, (537), 466 states have call successors, (537) [2022-11-25 15:29:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4789 transitions. [2022-11-25 15:29:22,815 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4789 transitions. Word has length 169 [2022-11-25 15:29:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:22,816 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 4789 transitions. [2022-11-25 15:29:22,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-25 15:29:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4789 transitions. [2022-11-25 15:29:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-25 15:29:22,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:22,830 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:22,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:23,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 15:29:23,041 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2122778787, now seen corresponding path program 1 times [2022-11-25 15:29:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:23,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076766733] [2022-11-25 15:29:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 15:29:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 15:29:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:29:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 15:29:24,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:24,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076766733] [2022-11-25 15:29:24,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076766733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:24,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157217088] [2022-11-25 15:29:24,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:24,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:24,024 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:24,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-25 15:29:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:29:24,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 15:29:24,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:24,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157217088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:24,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:24,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-25 15:29:24,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993197729] [2022-11-25 15:29:24,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:29:24,572 INFO L87 Difference]: Start difference. First operand 2963 states and 4789 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:24,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:24,778 INFO L93 Difference]: Finished difference Result 5900 states and 9548 transitions. [2022-11-25 15:29:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 180 [2022-11-25 15:29:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:24,811 INFO L225 Difference]: With dead ends: 5900 [2022-11-25 15:29:24,811 INFO L226 Difference]: Without dead ends: 2932 [2022-11-25 15:29:24,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:24,823 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 11 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:24,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2853 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:29:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2022-11-25 15:29:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2932. [2022-11-25 15:29:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2305 states have (on average 1.6203904555314534) internal successors, (3735), 2355 states have internal predecessors, (3735), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2022-11-25 15:29:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 4739 transitions. [2022-11-25 15:29:25,010 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 4739 transitions. Word has length 180 [2022-11-25 15:29:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:25,010 INFO L495 AbstractCegarLoop]: Abstraction has 2932 states and 4739 transitions. [2022-11-25 15:29:25,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 4739 transitions. [2022-11-25 15:29:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-25 15:29:25,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:25,019 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:25,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 15:29:25,229 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1740517326, now seen corresponding path program 1 times [2022-11-25 15:29:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025408393] [2022-11-25 15:29:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 15:29:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-25 15:29:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:29:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 15:29:26,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:26,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025408393] [2022-11-25 15:29:26,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025408393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:26,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789338737] [2022-11-25 15:29:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:26,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:26,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:26,155 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:26,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-25 15:29:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:29:26,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:26,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:26,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789338737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:26,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:26,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-25 15:29:26,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911400271] [2022-11-25 15:29:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:26,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:29:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:29:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:29:26,704 INFO L87 Difference]: Start difference. First operand 2932 states and 4739 transitions. Second operand has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-25 15:29:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:26,961 INFO L93 Difference]: Finished difference Result 5833 states and 9442 transitions. [2022-11-25 15:29:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:29:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 182 [2022-11-25 15:29:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:26,985 INFO L225 Difference]: With dead ends: 5833 [2022-11-25 15:29:26,986 INFO L226 Difference]: Without dead ends: 2932 [2022-11-25 15:29:26,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:29:26,997 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 143 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5657 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:26,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5657 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:29:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2022-11-25 15:29:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2911. [2022-11-25 15:29:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2284 states have (on average 1.6204028021015762) internal successors, (3701), 2334 states have internal predecessors, (3701), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2022-11-25 15:29:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 4705 transitions. [2022-11-25 15:29:27,177 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 4705 transitions. Word has length 182 [2022-11-25 15:29:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:27,178 INFO L495 AbstractCegarLoop]: Abstraction has 2911 states and 4705 transitions. [2022-11-25 15:29:27,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-25 15:29:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 4705 transitions. [2022-11-25 15:29:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-25 15:29:27,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:27,186 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:27,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:27,396 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:27,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1777170377, now seen corresponding path program 1 times [2022-11-25 15:29:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783244064] [2022-11-25 15:29:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-25 15:29:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 15:29:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:29:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 15:29:28,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:28,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783244064] [2022-11-25 15:29:28,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783244064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:28,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827524626] [2022-11-25 15:29:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:28,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,295 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-25 15:29:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:29:28,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 15:29:28,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:28,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827524626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:28,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:28,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-25 15:29:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099108431] [2022-11-25 15:29:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:28,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:28,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:28,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-25 15:29:28,826 INFO L87 Difference]: Start difference. First operand 2911 states and 4705 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:29,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:29,094 INFO L93 Difference]: Finished difference Result 5791 states and 9376 transitions. [2022-11-25 15:29:29,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:29,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 184 [2022-11-25 15:29:29,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:29,112 INFO L225 Difference]: With dead ends: 5791 [2022-11-25 15:29:29,112 INFO L226 Difference]: Without dead ends: 2911 [2022-11-25 15:29:29,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:29,124 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 176 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:29,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2686 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:29:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2022-11-25 15:29:29,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2911. [2022-11-25 15:29:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2284 states have (on average 1.6199649737302977) internal successors, (3700), 2334 states have internal predecessors, (3700), 470 states have call successors, (470), 141 states have call predecessors, (470), 156 states have return successors, (534), 446 states have call predecessors, (534), 465 states have call successors, (534) [2022-11-25 15:29:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 4704 transitions. [2022-11-25 15:29:29,310 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 4704 transitions. Word has length 184 [2022-11-25 15:29:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:29,311 INFO L495 AbstractCegarLoop]: Abstraction has 2911 states and 4704 transitions. [2022-11-25 15:29:29,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 4704 transitions. [2022-11-25 15:29:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-25 15:29:29,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:29,320 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:29,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:29,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:29,531 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:29,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash -136493091, now seen corresponding path program 1 times [2022-11-25 15:29:29,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:29,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408868216] [2022-11-25 15:29:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:29,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:29:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-25 15:29:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:29:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 15:29:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:30,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408868216] [2022-11-25 15:29:30,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408868216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:30,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:30,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:29:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946062727] [2022-11-25 15:29:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:30,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:29:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:30,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:30,421 INFO L87 Difference]: Start difference. First operand 2911 states and 4704 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:42,450 INFO L93 Difference]: Finished difference Result 6695 states and 10965 transitions. [2022-11-25 15:29:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:29:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 185 [2022-11-25 15:29:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:42,473 INFO L225 Difference]: With dead ends: 6695 [2022-11-25 15:29:42,473 INFO L226 Difference]: Without dead ends: 3786 [2022-11-25 15:29:42,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:29:42,484 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1054 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 4419 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 4692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 4419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:42,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1611 Invalid, 4692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [273 Valid, 4419 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-25 15:29:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-11-25 15:29:43,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 2871. [2022-11-25 15:29:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2871 states, 2247 states have (on average 1.6186025812194036) internal successors, (3637), 2295 states have internal predecessors, (3637), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-11-25 15:29:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 4637 transitions. [2022-11-25 15:29:43,278 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 4637 transitions. Word has length 185 [2022-11-25 15:29:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:43,278 INFO L495 AbstractCegarLoop]: Abstraction has 2871 states and 4637 transitions. [2022-11-25 15:29:43,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 4637 transitions. [2022-11-25 15:29:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-25 15:29:43,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:43,286 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:43,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 15:29:43,286 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1046747287, now seen corresponding path program 1 times [2022-11-25 15:29:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:43,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032055133] [2022-11-25 15:29:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:29:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:29:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-25 15:29:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:43,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:29:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 15:29:44,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032055133] [2022-11-25 15:29:44,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032055133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:44,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:44,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:29:44,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032733508] [2022-11-25 15:29:44,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:44,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:29:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:44,257 INFO L87 Difference]: Start difference. First operand 2871 states and 4637 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:55,909 INFO L93 Difference]: Finished difference Result 6574 states and 10764 transitions. [2022-11-25 15:29:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:29:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 186 [2022-11-25 15:29:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:29:55,929 INFO L225 Difference]: With dead ends: 6574 [2022-11-25 15:29:55,929 INFO L226 Difference]: Without dead ends: 3804 [2022-11-25 15:29:55,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:29:55,943 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1595 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 4144 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 4144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:29:55,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 1543 Invalid, 4582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [438 Valid, 4144 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-25 15:29:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3804 states. [2022-11-25 15:29:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3804 to 2871. [2022-11-25 15:29:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2871 states, 2247 states have (on average 1.6181575433911883) internal successors, (3636), 2295 states have internal predecessors, (3636), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-11-25 15:29:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 4636 transitions. [2022-11-25 15:29:56,922 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 4636 transitions. Word has length 186 [2022-11-25 15:29:56,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:29:56,923 INFO L495 AbstractCegarLoop]: Abstraction has 2871 states and 4636 transitions. [2022-11-25 15:29:56,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:29:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 4636 transitions. [2022-11-25 15:29:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-25 15:29:56,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:29:56,929 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:56,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 15:29:56,930 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:29:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 100103201, now seen corresponding path program 1 times [2022-11-25 15:29:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:56,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225367466] [2022-11-25 15:29:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:29:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:29:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:29:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:29:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:29:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:29:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:29:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:29:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:29:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 15:29:58,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:58,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225367466] [2022-11-25 15:29:58,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225367466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:58,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:58,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:29:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161912409] [2022-11-25 15:29:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:58,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:29:58,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:58,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:58,014 INFO L87 Difference]: Start difference. First operand 2871 states and 4636 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:30:09,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:30:09,169 INFO L93 Difference]: Finished difference Result 6590 states and 10791 transitions. [2022-11-25 15:30:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:30:09,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 187 [2022-11-25 15:30:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:30:09,190 INFO L225 Difference]: With dead ends: 6590 [2022-11-25 15:30:09,190 INFO L226 Difference]: Without dead ends: 3762 [2022-11-25 15:30:09,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:30:09,201 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1569 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 3932 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 4367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 3932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:30:09,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 1567 Invalid, 4367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [435 Valid, 3932 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-25 15:30:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-11-25 15:30:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 2859. [2022-11-25 15:30:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2235 states have (on average 1.6205816554809844) internal successors, (3622), 2283 states have internal predecessors, (3622), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-11-25 15:30:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4622 transitions. [2022-11-25 15:30:10,141 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4622 transitions. Word has length 187 [2022-11-25 15:30:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:30:10,141 INFO L495 AbstractCegarLoop]: Abstraction has 2859 states and 4622 transitions. [2022-11-25 15:30:10,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:30:10,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4622 transitions. [2022-11-25 15:30:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-25 15:30:10,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:30:10,147 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:10,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 15:30:10,148 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:30:10,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:10,148 INFO L85 PathProgramCache]: Analyzing trace with hash 287958239, now seen corresponding path program 1 times [2022-11-25 15:30:10,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:30:10,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140551731] [2022-11-25 15:30:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:10,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:30:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:30:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:30:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:30:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:30:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:30:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:30:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:30:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:30:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:30:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 15:30:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:30:11,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140551731] [2022-11-25 15:30:11,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140551731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:11,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:11,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:30:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67695903] [2022-11-25 15:30:11,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:11,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:30:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:30:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:30:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:30:11,067 INFO L87 Difference]: Start difference. First operand 2859 states and 4622 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:30:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:30:22,210 INFO L93 Difference]: Finished difference Result 6641 states and 10862 transitions. [2022-11-25 15:30:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 15:30:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 187 [2022-11-25 15:30:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:30:22,226 INFO L225 Difference]: With dead ends: 6641 [2022-11-25 15:30:22,226 INFO L226 Difference]: Without dead ends: 3819 [2022-11-25 15:30:22,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-25 15:30:22,237 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2096 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 3813 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 3813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:30:22,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 1460 Invalid, 4418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [605 Valid, 3813 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-25 15:30:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2022-11-25 15:30:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 2863. [2022-11-25 15:30:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2239 states have (on average 1.6190263510495757) internal successors, (3625), 2287 states have internal predecessors, (3625), 469 states have call successors, (469), 141 states have call predecessors, (469), 154 states have return successors, (531), 445 states have call predecessors, (531), 464 states have call successors, (531) [2022-11-25 15:30:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 4625 transitions. [2022-11-25 15:30:22,918 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 4625 transitions. Word has length 187 [2022-11-25 15:30:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:30:22,919 INFO L495 AbstractCegarLoop]: Abstraction has 2863 states and 4625 transitions. [2022-11-25 15:30:22,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 15:30:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 4625 transitions. [2022-11-25 15:30:22,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-25 15:30:22,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:30:22,925 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:22,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 15:30:22,926 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:30:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1251608190, now seen corresponding path program 1 times [2022-11-25 15:30:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:30:22,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799003832] [2022-11-25 15:30:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:30:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:23,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:30:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:23,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:30:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:23,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:30:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:30:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:30:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:30:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:30:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:30:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:30:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 15:30:25,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:30:25,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799003832] [2022-11-25 15:30:25,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799003832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:30:25,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557319019] [2022-11-25 15:30:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:25,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:30:25,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:30:25,269 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:30:25,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-25 15:30:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:25,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:30:25,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 15:30:26,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:26,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557319019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:26,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:30:26,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [17] total 21 [2022-11-25 15:30:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317550071] [2022-11-25 15:30:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:26,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:30:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:30:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:30:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:30:26,185 INFO L87 Difference]: Start difference. First operand 2863 states and 4625 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-25 15:30:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:30:29,034 INFO L93 Difference]: Finished difference Result 5674 states and 9210 transitions. [2022-11-25 15:30:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:30:29,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 188 [2022-11-25 15:30:29,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:30:29,048 INFO L225 Difference]: With dead ends: 5674 [2022-11-25 15:30:29,049 INFO L226 Difference]: Without dead ends: 2926 [2022-11-25 15:30:29,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:30:29,057 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1623 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:30:29,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 1355 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 15:30:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-11-25 15:30:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2751. [2022-11-25 15:30:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2111 states have (on average 1.6049265750828992) internal successors, (3388), 2173 states have internal predecessors, (3388), 495 states have call successors, (495), 131 states have call predecessors, (495), 144 states have return successors, (544), 468 states have call predecessors, (544), 490 states have call successors, (544) [2022-11-25 15:30:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4427 transitions. [2022-11-25 15:30:29,811 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4427 transitions. Word has length 188 [2022-11-25 15:30:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:30:29,811 INFO L495 AbstractCegarLoop]: Abstraction has 2751 states and 4427 transitions. [2022-11-25 15:30:29,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 6 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-25 15:30:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4427 transitions. [2022-11-25 15:30:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-25 15:30:29,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:30:29,816 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:29,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:30,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-25 15:30:30,026 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:30:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 412574528, now seen corresponding path program 1 times [2022-11-25 15:30:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:30:30,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034321259] [2022-11-25 15:30:30,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:30:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:30,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:30:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:30,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:30:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:30:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:30:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:30:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:30:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-25 15:30:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-25 15:30:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-25 15:30:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-25 15:30:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:30:31,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034321259] [2022-11-25 15:30:31,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034321259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:30:31,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369629128] [2022-11-25 15:30:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:31,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:30:31,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:30:31,911 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:30:31,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-25 15:30:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:32,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 15:30:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:30:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 15:30:32,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:30:32,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369629128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:32,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:30:32,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 24 [2022-11-25 15:30:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587320067] [2022-11-25 15:30:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:32,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:30:32,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:30:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:30:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:30:32,640 INFO L87 Difference]: Start difference. First operand 2751 states and 4427 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-25 15:30:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:30:37,345 INFO L93 Difference]: Finished difference Result 8854 states and 14504 transitions. [2022-11-25 15:30:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:30:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2022-11-25 15:30:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:30:37,371 INFO L225 Difference]: With dead ends: 8854 [2022-11-25 15:30:37,371 INFO L226 Difference]: Without dead ends: 6218 [2022-11-25 15:30:37,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 15:30:37,382 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 2240 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 4135 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 4663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 15:30:37,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 2132 Invalid, 4663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4135 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 15:30:37,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2022-11-25 15:30:38,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 5768. [2022-11-25 15:30:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 4408 states have (on average 1.605263157894737) internal successors, (7076), 4541 states have internal predecessors, (7076), 1037 states have call successors, (1037), 263 states have call predecessors, (1037), 322 states have return successors, (1281), 1007 states have call predecessors, (1281), 1032 states have call successors, (1281) [2022-11-25 15:30:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 9394 transitions. [2022-11-25 15:30:38,832 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 9394 transitions. Word has length 188 [2022-11-25 15:30:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:30:38,832 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 9394 transitions. [2022-11-25 15:30:38,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-25 15:30:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 9394 transitions. [2022-11-25 15:30:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 15:30:38,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:30:38,840 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:30:38,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-25 15:30:39,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:30:39,042 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:30:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:30:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1382549031, now seen corresponding path program 1 times [2022-11-25 15:30:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:30:39,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347066462] [2022-11-25 15:30:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:30:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:30:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:30:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:30:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:39,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:30:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:30:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:30:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:30:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:30:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:30:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:30:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:30:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:30:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:30:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:30:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:30:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 15:30:40,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:30:40,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347066462] [2022-11-25 15:30:40,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347066462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:30:40,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:30:40,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 15:30:40,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684016757] [2022-11-25 15:30:40,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:30:40,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 15:30:40,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:30:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 15:30:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:30:40,698 INFO L87 Difference]: Start difference. First operand 5768 states and 9394 transitions. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 10 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-25 15:32:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:00,343 INFO L93 Difference]: Finished difference Result 33944 states and 58982 transitions. [2022-11-25 15:32:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-11-25 15:32:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 10 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 193 [2022-11-25 15:32:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:00,485 INFO L225 Difference]: With dead ends: 33944 [2022-11-25 15:32:00,485 INFO L226 Difference]: Without dead ends: 28295 [2022-11-25 15:32:00,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5817 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=2319, Invalid=12687, Unknown=0, NotChecked=0, Total=15006 [2022-11-25 15:32:00,520 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 15356 mSDsluCounter, 4228 mSDsCounter, 0 mSdLazyCounter, 25785 mSolverCounterSat, 11590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15413 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 37375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 11590 IncrementalHoareTripleChecker+Valid, 25785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:00,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15413 Valid, 4899 Invalid, 37375 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [11590 Valid, 25785 Invalid, 0 Unknown, 0 Unchecked, 52.7s Time] [2022-11-25 15:32:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28295 states. [2022-11-25 15:32:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28295 to 5902. [2022-11-25 15:32:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5902 states, 4503 states have (on average 1.5909393737508328) internal successors, (7164), 4620 states have internal predecessors, (7164), 1061 states have call successors, (1061), 276 states have call predecessors, (1061), 337 states have return successors, (1297), 1049 states have call predecessors, (1297), 1056 states have call successors, (1297) [2022-11-25 15:32:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 9522 transitions. [2022-11-25 15:32:03,410 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 9522 transitions. Word has length 193 [2022-11-25 15:32:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:03,410 INFO L495 AbstractCegarLoop]: Abstraction has 5902 states and 9522 transitions. [2022-11-25 15:32:03,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.0) internal successors, (120), 10 states have internal predecessors, (120), 5 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-25 15:32:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 9522 transitions. [2022-11-25 15:32:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 15:32:03,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:03,413 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:03,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 15:32:03,414 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:03,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:03,414 INFO L85 PathProgramCache]: Analyzing trace with hash 545723671, now seen corresponding path program 1 times [2022-11-25 15:32:03,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:03,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643975022] [2022-11-25 15:32:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:03,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:32:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:32:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:32:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:32:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:32:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:32:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:32:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:32:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:32:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:32:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:32:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:32:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:32:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:32:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 15:32:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:05,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643975022] [2022-11-25 15:32:05,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643975022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:32:05,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140506304] [2022-11-25 15:32:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:05,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:32:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:32:05,356 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:32:05,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-25 15:32:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:05,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:32:05,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:05,903 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-25 15:32:05,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:32:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 15:32:06,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140506304] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 15:32:06,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:32:06,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 6] total 27 [2022-11-25 15:32:06,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727827798] [2022-11-25 15:32:06,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:06,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:06,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-11-25 15:32:06,239 INFO L87 Difference]: Start difference. First operand 5902 states and 9522 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-25 15:32:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:08,684 INFO L93 Difference]: Finished difference Result 6225 states and 10050 transitions. [2022-11-25 15:32:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:32:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 193 [2022-11-25 15:32:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:08,719 INFO L225 Difference]: With dead ends: 6225 [2022-11-25 15:32:08,719 INFO L226 Difference]: Without dead ends: 6210 [2022-11-25 15:32:08,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 421 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-11-25 15:32:08,724 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 64 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 3903 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:08,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 3903 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6210 states. [2022-11-25 15:32:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6210 to 5950. [2022-11-25 15:32:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5950 states, 4551 states have (on average 1.5847066578773896) internal successors, (7212), 4668 states have internal predecessors, (7212), 1061 states have call successors, (1061), 276 states have call predecessors, (1061), 337 states have return successors, (1297), 1049 states have call predecessors, (1297), 1056 states have call successors, (1297) [2022-11-25 15:32:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5950 states to 5950 states and 9570 transitions. [2022-11-25 15:32:10,702 INFO L78 Accepts]: Start accepts. Automaton has 5950 states and 9570 transitions. Word has length 193 [2022-11-25 15:32:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:10,703 INFO L495 AbstractCegarLoop]: Abstraction has 5950 states and 9570 transitions. [2022-11-25 15:32:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-25 15:32:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5950 states and 9570 transitions. [2022-11-25 15:32:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-25 15:32:10,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:10,708 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:10,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-25 15:32:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-25 15:32:10,909 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1164991164, now seen corresponding path program 1 times [2022-11-25 15:32:10,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:10,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170254023] [2022-11-25 15:32:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:32:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:32:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:32:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:32:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-25 15:32:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:32:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:32:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:32:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:32:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:32:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:32:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:32:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:32:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:32:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:32:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:32:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 15:32:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-25 15:32:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-25 15:32:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,467 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-25 15:32:12,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:12,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170254023] [2022-11-25 15:32:12,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170254023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:32:12,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126826746] [2022-11-25 15:32:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:12,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:32:12,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:32:12,471 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:32:12,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-25 15:32:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:12,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:32:12,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-25 15:32:13,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:32:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-25 15:32:14,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126826746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:32:14,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:32:14,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 8] total 29 [2022-11-25 15:32:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302120252] [2022-11-25 15:32:14,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:32:14,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 15:32:14,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:14,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 15:32:14,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-11-25 15:32:14,363 INFO L87 Difference]: Start difference. First operand 5950 states and 9570 transitions. Second operand has 29 states, 29 states have (on average 11.172413793103448) internal successors, (324), 20 states have internal predecessors, (324), 10 states have call successors, (65), 9 states have call predecessors, (65), 15 states have return successors, (65), 16 states have call predecessors, (65), 9 states have call successors, (65) [2022-11-25 15:34:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:20,509 INFO L93 Difference]: Finished difference Result 53837 states and 97713 transitions. [2022-11-25 15:34:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2022-11-25 15:34:20,510 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.172413793103448) internal successors, (324), 20 states have internal predecessors, (324), 10 states have call successors, (65), 9 states have call predecessors, (65), 15 states have return successors, (65), 16 states have call predecessors, (65), 9 states have call successors, (65) Word has length 236 [2022-11-25 15:34:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:20,752 INFO L225 Difference]: With dead ends: 53837 [2022-11-25 15:34:20,752 INFO L226 Difference]: Without dead ends: 47994 [2022-11-25 15:34:20,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 531 SyntacticMatches, 4 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15914 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=3644, Invalid=38586, Unknown=0, NotChecked=0, Total=42230 [2022-11-25 15:34:20,853 INFO L413 NwaCegarLoop]: 1750 mSDtfsCounter, 22161 mSDsluCounter, 21376 mSDsCounter, 0 mSdLazyCounter, 79521 mSolverCounterSat, 13452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22161 SdHoareTripleChecker+Valid, 23126 SdHoareTripleChecker+Invalid, 92973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 13452 IncrementalHoareTripleChecker+Valid, 79521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:20,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22161 Valid, 23126 Invalid, 92973 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [13452 Valid, 79521 Invalid, 0 Unknown, 0 Unchecked, 78.5s Time] [2022-11-25 15:34:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47994 states. [2022-11-25 15:34:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47994 to 30491. [2022-11-25 15:34:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30491 states, 22987 states have (on average 1.5570539870361508) internal successors, (35792), 23662 states have internal predecessors, (35792), 5757 states have call successors, (5757), 1089 states have call predecessors, (5757), 1746 states have return successors, (8547), 6011 states have call predecessors, (8547), 5752 states have call successors, (8547) [2022-11-25 15:34:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30491 states to 30491 states and 50096 transitions. [2022-11-25 15:34:32,914 INFO L78 Accepts]: Start accepts. Automaton has 30491 states and 50096 transitions. Word has length 236 [2022-11-25 15:34:32,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:32,915 INFO L495 AbstractCegarLoop]: Abstraction has 30491 states and 50096 transitions. [2022-11-25 15:34:32,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.172413793103448) internal successors, (324), 20 states have internal predecessors, (324), 10 states have call successors, (65), 9 states have call predecessors, (65), 15 states have return successors, (65), 16 states have call predecessors, (65), 9 states have call successors, (65) [2022-11-25 15:34:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 30491 states and 50096 transitions. [2022-11-25 15:34:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-25 15:34:32,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:32,938 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:32,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:33,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c71877-1af4-4961-9e8a-bac79b255510/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-25 15:34:33,139 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:34:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2035910368, now seen corresponding path program 1 times [2022-11-25 15:34:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:34:33,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740054735] [2022-11-25 15:34:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:34:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:34:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:34:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-25 15:34:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 15:34:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-25 15:34:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:34:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:34:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 15:34:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 15:34:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 15:34:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 15:34:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:34:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-25 15:34:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-25 15:34:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-25 15:34:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-25 15:34:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-25 15:34:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-25 15:34:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 15:34:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-25 15:34:33,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:34:33,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740054735] [2022-11-25 15:34:33,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740054735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:34:33,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:34:33,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:34:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289359901] [2022-11-25 15:34:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:34:33,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:34:33,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:34:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:34:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:34:33,953 INFO L87 Difference]: Start difference. First operand 30491 states and 50096 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-25 15:35:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:35:00,421 INFO L93 Difference]: Finished difference Result 68315 states and 114500 transitions. [2022-11-25 15:35:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:35:00,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (26), 6 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2022-11-25 15:35:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:35:00,671 INFO L225 Difference]: With dead ends: 68315 [2022-11-25 15:35:00,672 INFO L226 Difference]: Without dead ends: 38029 [2022-11-25 15:35:01,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-25 15:35:01,082 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1037 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 4360 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 4635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 4360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:35:01,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1602 Invalid, 4635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 4360 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-25 15:35:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38029 states.