./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:33:59,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:59,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:59,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:59,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:59,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:59,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:59,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:59,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:59,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:59,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:59,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:59,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:59,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:59,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:59,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:59,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:59,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:59,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:59,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:59,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:59,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:59,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:59,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:59,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:59,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:59,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:59,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:59,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:59,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:59,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:59,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:59,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:59,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:59,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:59,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:59,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:59,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:59,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:59,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:59,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:59,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:33:59,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:59,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:59,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:59,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:59,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:59,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:59,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:59,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:59,710 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:59,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:59,711 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:33:59,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:59,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:33:59,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:59,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:59,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:59,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:59,713 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:33:59,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:59,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:59,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:59,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:59,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:59,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:59,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:59,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:59,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:59,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:59,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:59,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:59,716 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:59,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:59,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:59,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 [2022-11-18 19:34:00,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:34:00,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:34:00,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:34:00,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:34:00,102 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:34:00,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2022-11-18 19:34:00,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/data/b65082d96/5fcde1927e6740f18b2af3bdc2c3162e/FLAG24a9482bd [2022-11-18 19:34:00,849 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:34:00,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2022-11-18 19:34:00,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/data/b65082d96/5fcde1927e6740f18b2af3bdc2c3162e/FLAG24a9482bd [2022-11-18 19:34:01,043 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/data/b65082d96/5fcde1927e6740f18b2af3bdc2c3162e [2022-11-18 19:34:01,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:34:01,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:34:01,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:01,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:34:01,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:34:01,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:01,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb1a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01, skipping insertion in model container [2022-11-18 19:34:01,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:01,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:34:01,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:34:01,406 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c[1542,1555] [2022-11-18 19:34:01,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:01,751 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:34:01,763 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c[1542,1555] [2022-11-18 19:34:01,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:01,878 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:34:01,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01 WrapperNode [2022-11-18 19:34:01,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:01,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:01,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:34:01,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:34:01,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:01,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:01,999 INFO L138 Inliner]: procedures = 127, calls = 199, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 982 [2022-11-18 19:34:02,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:02,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:34:02,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:34:02,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:34:02,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:34:02,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:34:02,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:34:02,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:34:02,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (1/1) ... [2022-11-18 19:34:02,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:02,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:02,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:34:02,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:34:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-18 19:34:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-18 19:34:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-18 19:34:02,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-18 19:34:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-18 19:34:02,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-18 19:34:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-18 19:34:02,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-18 19:34:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-18 19:34:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-18 19:34:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-18 19:34:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-18 19:34:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-18 19:34:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-18 19:34:02,202 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-18 19:34:02,203 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-18 19:34:02,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-18 19:34:02,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-18 19:34:02,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-18 19:34:02,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:34:02,203 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-18 19:34:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-18 19:34:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-18 19:34:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-18 19:34:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-18 19:34:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-18 19:34:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-18 19:34:02,205 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-18 19:34:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-18 19:34:02,205 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-18 19:34:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-18 19:34:02,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-18 19:34:02,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-18 19:34:02,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-18 19:34:02,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:34:02,206 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-18 19:34:02,206 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-18 19:34:02,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:34:02,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:34:02,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:34:02,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:34:03,443 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:34:03,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:34:03,461 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:34:03,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:03 BoogieIcfgContainer [2022-11-18 19:34:03,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:34:03,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:34:03,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:34:03,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:34:03,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:34:01" (1/3) ... [2022-11-18 19:34:03,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4904e863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:03, skipping insertion in model container [2022-11-18 19:34:03,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:01" (2/3) ... [2022-11-18 19:34:03,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4904e863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:03, skipping insertion in model container [2022-11-18 19:34:03,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:03" (3/3) ... [2022-11-18 19:34:03,478 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2022-11-18 19:34:03,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:34:03,498 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:34:03,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:34:03,618 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;@c356ad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:34:03,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:34:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 245 states have (on average 1.530612244897959) internal successors, (375), 247 states have internal predecessors, (375), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-18 19:34:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 19:34:03,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:03,661 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:03,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1893716635, now seen corresponding path program 1 times [2022-11-18 19:34:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:03,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368909084] [2022-11-18 19:34:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:34:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:34:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:34:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:34:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 19:34:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:34:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:34:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 19:34:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:34:04,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368909084] [2022-11-18 19:34:04,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368909084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:04,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772638191] [2022-11-18 19:34:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:04,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:04,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:04,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:04,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:34:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 19:34:04,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 19:34:05,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:05,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772638191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:05,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:05,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-18 19:34:05,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812751456] [2022-11-18 19:34:05,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:34:05,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:34:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:05,048 INFO L87 Difference]: Start difference. First operand has 308 states, 245 states have (on average 1.530612244897959) internal successors, (375), 247 states have internal predecessors, (375), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:05,126 INFO L93 Difference]: Finished difference Result 462 states and 680 transitions. [2022-11-18 19:34:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:34:05,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2022-11-18 19:34:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:05,150 INFO L225 Difference]: With dead ends: 462 [2022-11-18 19:34:05,153 INFO L226 Difference]: Without dead ends: 301 [2022-11-18 19:34:05,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:05,165 INFO L413 NwaCegarLoop]: 459 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, 459 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 [2022-11-18 19:34:05,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:05,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-18 19:34:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-18 19:34:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 239 states have (on average 1.5230125523012552) internal successors, (364), 240 states have internal predecessors, (364), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-18 19:34:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 451 transitions. [2022-11-18 19:34:05,236 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 451 transitions. Word has length 92 [2022-11-18 19:34:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:05,238 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 451 transitions. [2022-11-18 19:34:05,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 451 transitions. [2022-11-18 19:34:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 19:34:05,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:05,243 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:05,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:34:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:05,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2053033813, now seen corresponding path program 1 times [2022-11-18 19:34:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:05,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150649146] [2022-11-18 19:34:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:34:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:34:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:34:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:34:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 19:34:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:34:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:34:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:34:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:34:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 19:34:05,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:05,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150649146] [2022-11-18 19:34:05,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150649146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550238986] [2022-11-18 19:34:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:05,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:05,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:05,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:34:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:34:06,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 19:34:06,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:06,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550238986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:06,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:06,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-18 19:34:06,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237485419] [2022-11-18 19:34:06,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:06,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:06,298 INFO L87 Difference]: Start difference. First operand 301 states and 451 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:06,376 INFO L93 Difference]: Finished difference Result 452 states and 661 transitions. [2022-11-18 19:34:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 93 [2022-11-18 19:34:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:06,383 INFO L225 Difference]: With dead ends: 452 [2022-11-18 19:34:06,383 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 19:34:06,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:06,386 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:06,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 896 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 19:34:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2022-11-18 19:34:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 241 states have (on average 1.5186721991701244) internal successors, (366), 242 states have internal predecessors, (366), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-18 19:34:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 453 transitions. [2022-11-18 19:34:06,435 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 453 transitions. Word has length 93 [2022-11-18 19:34:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:06,436 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 453 transitions. [2022-11-18 19:34:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 453 transitions. [2022-11-18 19:34:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 19:34:06,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:06,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:06,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:06,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:06,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:06,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:06,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1393574004, now seen corresponding path program 1 times [2022-11-18 19:34:06,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:06,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465574439] [2022-11-18 19:34:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:06,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:34:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:34:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:34:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 19:34:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:34:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:34:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:34:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:34:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465574439] [2022-11-18 19:34:07,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465574439] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:07,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260935280] [2022-11-18 19:34:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:07,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:07,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:34:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:34:07,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 19:34:07,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:07,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260935280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:07,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:07,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-18 19:34:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872236356] [2022-11-18 19:34:07,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:07,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:07,370 INFO L87 Difference]: Start difference. First operand 303 states and 453 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:07,419 INFO L93 Difference]: Finished difference Result 636 states and 965 transitions. [2022-11-18 19:34:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:07,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 99 [2022-11-18 19:34:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:07,426 INFO L225 Difference]: With dead ends: 636 [2022-11-18 19:34:07,427 INFO L226 Difference]: Without dead ends: 360 [2022-11-18 19:34:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:07,439 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 107 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:07,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 872 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-18 19:34:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 352. [2022-11-18 19:34:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 279 states have (on average 1.5340501792114696) internal successors, (428), 280 states have internal predecessors, (428), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-18 19:34:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 537 transitions. [2022-11-18 19:34:07,469 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 537 transitions. Word has length 99 [2022-11-18 19:34:07,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:07,469 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 537 transitions. [2022-11-18 19:34:07,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 537 transitions. [2022-11-18 19:34:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 19:34:07,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:07,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:07,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:07,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:07,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:07,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2023849858, now seen corresponding path program 1 times [2022-11-18 19:34:07,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:07,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188240379] [2022-11-18 19:34:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:07,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 19:34:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 19:34:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:34:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 19:34:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:34:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:34:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:34:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:34:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 19:34:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:34:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:07,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188240379] [2022-11-18 19:34:07,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188240379] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:07,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929909457] [2022-11-18 19:34:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:07,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:07,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:07,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:08,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:34:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:34:08,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:34:08,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:08,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929909457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:08,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:08,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-18 19:34:08,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909620074] [2022-11-18 19:34:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:08,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:08,415 INFO L87 Difference]: Start difference. First operand 352 states and 537 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:08,502 INFO L93 Difference]: Finished difference Result 695 states and 1064 transitions. [2022-11-18 19:34:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2022-11-18 19:34:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:08,506 INFO L225 Difference]: With dead ends: 695 [2022-11-18 19:34:08,507 INFO L226 Difference]: Without dead ends: 354 [2022-11-18 19:34:08,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:08,509 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 125 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1623 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-18 19:34:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-11-18 19:34:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 280 states have (on average 1.5321428571428573) internal successors, (429), 282 states have internal predecessors, (429), 55 states have call successors, (55), 17 states have call predecessors, (55), 18 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2022-11-18 19:34:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 540 transitions. [2022-11-18 19:34:08,553 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 540 transitions. Word has length 100 [2022-11-18 19:34:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 540 transitions. [2022-11-18 19:34:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 540 transitions. [2022-11-18 19:34:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 19:34:08,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:08,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:08,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:08,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash 373687396, now seen corresponding path program 1 times [2022-11-18 19:34:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:08,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638984033] [2022-11-18 19:34:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:08,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 19:34:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 19:34:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 19:34:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:34:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:34:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:34:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:34:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 19:34:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:34:09,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638984033] [2022-11-18 19:34:09,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638984033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399882388] [2022-11-18 19:34:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:09,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:09,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:09,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:09,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:34:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:34:09,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:34:09,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:09,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399882388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:09,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-18 19:34:09,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812237975] [2022-11-18 19:34:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:09,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:34:09,453 INFO L87 Difference]: Start difference. First operand 354 states and 540 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:09,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:09,546 INFO L93 Difference]: Finished difference Result 697 states and 1069 transitions. [2022-11-18 19:34:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:34:09,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-11-18 19:34:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:09,549 INFO L225 Difference]: With dead ends: 697 [2022-11-18 19:34:09,550 INFO L226 Difference]: Without dead ends: 356 [2022-11-18 19:34:09,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:09,552 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 124 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:09,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1612 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:34:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-18 19:34:09,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2022-11-18 19:34:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 281 states have (on average 1.5302491103202847) internal successors, (430), 284 states have internal predecessors, (430), 55 states have call successors, (55), 17 states have call predecessors, (55), 19 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2022-11-18 19:34:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 546 transitions. [2022-11-18 19:34:09,606 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 546 transitions. Word has length 101 [2022-11-18 19:34:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:09,607 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 546 transitions. [2022-11-18 19:34:09,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 546 transitions. [2022-11-18 19:34:09,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 19:34:09,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:09,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:09,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:09,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:09,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash -847480188, now seen corresponding path program 1 times [2022-11-18 19:34:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:09,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703039986] [2022-11-18 19:34:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 19:34:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 19:34:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 19:34:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:34:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:34:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:34:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:34:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:34:10,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:10,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703039986] [2022-11-18 19:34:10,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703039986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:10,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:10,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:34:10,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719870188] [2022-11-18 19:34:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:34:10,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:10,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:34:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:10,034 INFO L87 Difference]: Start difference. First operand 356 states and 546 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:12,538 INFO L93 Difference]: Finished difference Result 848 states and 1303 transitions. [2022-11-18 19:34:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-11-18 19:34:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:12,543 INFO L225 Difference]: With dead ends: 848 [2022-11-18 19:34:12,543 INFO L226 Difference]: Without dead ends: 515 [2022-11-18 19:34:12,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:34:12,546 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1087 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:12,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 988 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:34:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-18 19:34:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2022-11-18 19:34:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 281 states have (on average 1.5302491103202847) internal successors, (430), 284 states have internal predecessors, (430), 55 states have call successors, (55), 17 states have call predecessors, (55), 19 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2022-11-18 19:34:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 545 transitions. [2022-11-18 19:34:12,606 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 545 transitions. Word has length 102 [2022-11-18 19:34:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:12,607 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 545 transitions. [2022-11-18 19:34:12,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 545 transitions. [2022-11-18 19:34:12,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:34:12,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:12,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:34:12,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:34:12,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:12,611 INFO L85 PathProgramCache]: Analyzing trace with hash -839909108, now seen corresponding path program 2 times [2022-11-18 19:34:12,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:12,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069000547] [2022-11-18 19:34:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:34:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 19:34:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 19:34:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:34:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:34:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 19:34:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:34:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:34:12,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:12,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069000547] [2022-11-18 19:34:12,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069000547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:12,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:12,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:34:12,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157214878] [2022-11-18 19:34:12,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:12,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:34:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:12,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:34:12,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:12,827 INFO L87 Difference]: Start difference. First operand 356 states and 545 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:15,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:15,270 INFO L93 Difference]: Finished difference Result 850 states and 1306 transitions. [2022-11-18 19:34:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:34:15,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-11-18 19:34:15,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:15,274 INFO L225 Difference]: With dead ends: 850 [2022-11-18 19:34:15,274 INFO L226 Difference]: Without dead ends: 517 [2022-11-18 19:34:15,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:34:15,276 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1083 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:15,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 987 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:34:15,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-18 19:34:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 358. [2022-11-18 19:34:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 286 states have internal predecessors, (431), 55 states have call successors, (55), 17 states have call predecessors, (55), 20 states have return successors, (62), 54 states have call predecessors, (62), 54 states have call successors, (62) [2022-11-18 19:34:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 548 transitions. [2022-11-18 19:34:15,342 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 548 transitions. Word has length 103 [2022-11-18 19:34:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:15,345 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 548 transitions. [2022-11-18 19:34:15,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 19:34:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 548 transitions. [2022-11-18 19:34:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 19:34:15,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:15,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:15,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:34:15,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -367838881, now seen corresponding path program 1 times [2022-11-18 19:34:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:15,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129094095] [2022-11-18 19:34:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:15,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 19:34:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 19:34:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:34:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 19:34:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:34:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 19:34:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:15,623 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:34:15,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:15,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129094095] [2022-11-18 19:34:15,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129094095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:15,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:15,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:34:15,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903459756] [2022-11-18 19:34:15,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:15,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:34:15,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:15,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:34:15,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:15,626 INFO L87 Difference]: Start difference. First operand 358 states and 548 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 19:34:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:18,818 INFO L93 Difference]: Finished difference Result 848 states and 1301 transitions. [2022-11-18 19:34:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:34:18,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 104 [2022-11-18 19:34:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:18,842 INFO L225 Difference]: With dead ends: 848 [2022-11-18 19:34:18,843 INFO L226 Difference]: Without dead ends: 517 [2022-11-18 19:34:18,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:34:18,845 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1207 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:18,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1289 Invalid, 4378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [398 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 19:34:18,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-18 19:34:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 358. [2022-11-18 19:34:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 286 states have internal predecessors, (431), 55 states have call successors, (55), 17 states have call predecessors, (55), 20 states have return successors, (61), 54 states have call predecessors, (61), 54 states have call successors, (61) [2022-11-18 19:34:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 547 transitions. [2022-11-18 19:34:18,885 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 547 transitions. Word has length 104 [2022-11-18 19:34:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:18,886 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 547 transitions. [2022-11-18 19:34:18,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 19:34:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 547 transitions. [2022-11-18 19:34:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 19:34:18,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:18,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-18 19:34:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:34:18,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1001532517, now seen corresponding path program 2 times [2022-11-18 19:34:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147069586] [2022-11-18 19:34:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 19:34:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 19:34:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:34:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 19:34:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:34:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 19:34:19,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:19,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147069586] [2022-11-18 19:34:19,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147069586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:19,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:19,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 19:34:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524824830] [2022-11-18 19:34:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:19,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:34:19,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:19,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:34:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:34:19,184 INFO L87 Difference]: Start difference. First operand 358 states and 547 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 19:34:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:22,365 INFO L93 Difference]: Finished difference Result 850 states and 1307 transitions. [2022-11-18 19:34:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:34:22,366 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 105 [2022-11-18 19:34:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:22,370 INFO L225 Difference]: With dead ends: 850 [2022-11-18 19:34:22,370 INFO L226 Difference]: Without dead ends: 519 [2022-11-18 19:34:22,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:34:22,372 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1201 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4029 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:22,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 1290 Invalid, 4422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4029 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-18 19:34:22,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-18 19:34:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 360. [2022-11-18 19:34:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 283 states have (on average 1.5265017667844523) internal successors, (432), 288 states have internal predecessors, (432), 55 states have call successors, (55), 17 states have call predecessors, (55), 21 states have return successors, (66), 54 states have call predecessors, (66), 54 states have call successors, (66) [2022-11-18 19:34:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 553 transitions. [2022-11-18 19:34:22,415 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 553 transitions. Word has length 105 [2022-11-18 19:34:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:22,416 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 553 transitions. [2022-11-18 19:34:22,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-18 19:34:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 553 transitions. [2022-11-18 19:34:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 19:34:22,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:22,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:22,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:34:22,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash 379498234, now seen corresponding path program 1 times [2022-11-18 19:34:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:22,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492527453] [2022-11-18 19:34:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 19:34:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:34:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:34:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:34:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:34:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:34:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:22,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492527453] [2022-11-18 19:34:22,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492527453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472515759] [2022-11-18 19:34:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:22,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:22,582 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:22,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:34:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:22,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:34:22,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:22,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472515759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:23,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:23,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-11-18 19:34:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250853058] [2022-11-18 19:34:23,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:34:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:34:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:34:23,017 INFO L87 Difference]: Start difference. First operand 360 states and 553 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 19:34:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:25,811 INFO L93 Difference]: Finished difference Result 1019 states and 1635 transitions. [2022-11-18 19:34:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:34:25,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 106 [2022-11-18 19:34:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:25,819 INFO L225 Difference]: With dead ends: 1019 [2022-11-18 19:34:25,819 INFO L226 Difference]: Without dead ends: 871 [2022-11-18 19:34:25,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:34:25,822 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1381 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:25,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 1470 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:34:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-18 19:34:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 688. [2022-11-18 19:34:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 547 states have (on average 1.5904936014625228) internal successors, (870), 552 states have internal predecessors, (870), 119 states have call successors, (119), 17 states have call predecessors, (119), 21 states have return successors, (140), 118 states have call predecessors, (140), 118 states have call successors, (140) [2022-11-18 19:34:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1129 transitions. [2022-11-18 19:34:25,902 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1129 transitions. Word has length 106 [2022-11-18 19:34:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:25,903 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1129 transitions. [2022-11-18 19:34:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 19:34:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1129 transitions. [2022-11-18 19:34:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 19:34:25,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:25,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:25,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:26,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc7ca19-0f04-406b-95cd-635f530910c0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:26,116 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:26,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash -791182691, now seen corresponding path program 1 times [2022-11-18 19:34:26,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:26,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584995695] [2022-11-18 19:34:26,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:26,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 19:34:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:34:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:34:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 19:34:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:34:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:34:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584995695] [2022-11-18 19:34:26,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584995695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:26,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:26,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:26,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158333931] [2022-11-18 19:34:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:26,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:26,239 INFO L87 Difference]: Start difference. First operand 688 states and 1129 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:28,227 INFO L93 Difference]: Finished difference Result 1800 states and 3006 transitions. [2022-11-18 19:34:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-18 19:34:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:28,236 INFO L225 Difference]: With dead ends: 1800 [2022-11-18 19:34:28,236 INFO L226 Difference]: Without dead ends: 1180 [2022-11-18 19:34:28,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:28,240 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1067 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:28,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 871 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:34:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-18 19:34:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1013. [2022-11-18 19:34:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 808 states have (on average 1.6027227722772277) internal successors, (1295), 813 states have internal predecessors, (1295), 183 states have call successors, (183), 17 states have call predecessors, (183), 21 states have return successors, (214), 182 states have call predecessors, (214), 182 states have call successors, (214) [2022-11-18 19:34:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1692 transitions. [2022-11-18 19:34:28,369 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1692 transitions. Word has length 112 [2022-11-18 19:34:28,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:28,369 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1692 transitions. [2022-11-18 19:34:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1692 transitions. [2022-11-18 19:34:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 19:34:28,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:28,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:28,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:34:28,376 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -478968496, now seen corresponding path program 1 times [2022-11-18 19:34:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:28,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187262325] [2022-11-18 19:34:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 19:34:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:34:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 19:34:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 19:34:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:34:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:34:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187262325] [2022-11-18 19:34:28,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187262325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:28,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:28,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:28,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194655145] [2022-11-18 19:34:28,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:28,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:28,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:28,509 INFO L87 Difference]: Start difference. First operand 1013 states and 1692 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:30,465 INFO L93 Difference]: Finished difference Result 2580 states and 4355 transitions. [2022-11-18 19:34:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-18 19:34:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:30,478 INFO L225 Difference]: With dead ends: 2580 [2022-11-18 19:34:30,478 INFO L226 Difference]: Without dead ends: 1688 [2022-11-18 19:34:30,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:30,483 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1064 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:30,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 829 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:34:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-11-18 19:34:30,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1521. [2022-11-18 19:34:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1221 states have (on average 1.6101556101556103) internal successors, (1966), 1226 states have internal predecessors, (1966), 278 states have call successors, (278), 17 states have call predecessors, (278), 21 states have return successors, (309), 277 states have call predecessors, (309), 277 states have call successors, (309) [2022-11-18 19:34:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2553 transitions. [2022-11-18 19:34:30,668 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2553 transitions. Word has length 113 [2022-11-18 19:34:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:30,669 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2553 transitions. [2022-11-18 19:34:30,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:30,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2553 transitions. [2022-11-18 19:34:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 19:34:30,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:30,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:30,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:34:30,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash 331728347, now seen corresponding path program 1 times [2022-11-18 19:34:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:30,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353118024] [2022-11-18 19:34:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:30,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 19:34:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:34:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 19:34:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 19:34:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:34:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:34:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:30,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:30,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353118024] [2022-11-18 19:34:30,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353118024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:30,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:30,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323353799] [2022-11-18 19:34:30,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:30,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:30,815 INFO L87 Difference]: Start difference. First operand 1521 states and 2553 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:32,820 INFO L93 Difference]: Finished difference Result 3732 states and 6364 transitions. [2022-11-18 19:34:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-18 19:34:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:32,838 INFO L225 Difference]: With dead ends: 3732 [2022-11-18 19:34:32,838 INFO L226 Difference]: Without dead ends: 2457 [2022-11-18 19:34:32,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:32,845 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1063 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:32,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 827 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:34:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2022-11-18 19:34:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2290. [2022-11-18 19:34:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 1867 states have (on average 1.615961435457954) internal successors, (3017), 1872 states have internal predecessors, (3017), 401 states have call successors, (401), 17 states have call predecessors, (401), 21 states have return successors, (448), 400 states have call predecessors, (448), 400 states have call successors, (448) [2022-11-18 19:34:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3866 transitions. [2022-11-18 19:34:33,100 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3866 transitions. Word has length 114 [2022-11-18 19:34:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:33,101 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 3866 transitions. [2022-11-18 19:34:33,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3866 transitions. [2022-11-18 19:34:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-18 19:34:33,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:33,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:33,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:34:33,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:33,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:33,114 INFO L85 PathProgramCache]: Analyzing trace with hash -11216017, now seen corresponding path program 1 times [2022-11-18 19:34:33,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:33,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005032395] [2022-11-18 19:34:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 19:34:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:34:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 19:34:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-18 19:34:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 19:34:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 19:34:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:33,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005032395] [2022-11-18 19:34:33,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005032395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:33,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:33,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451165007] [2022-11-18 19:34:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:33,237 INFO L87 Difference]: Start difference. First operand 2290 states and 3866 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:35,364 INFO L93 Difference]: Finished difference Result 5526 states and 9498 transitions. [2022-11-18 19:34:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-11-18 19:34:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:35,385 INFO L225 Difference]: With dead ends: 5526 [2022-11-18 19:34:35,386 INFO L226 Difference]: Without dead ends: 3686 [2022-11-18 19:34:35,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:35,392 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1060 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:35,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 828 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:34:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2022-11-18 19:34:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3519. [2022-11-18 19:34:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 2917 states have (on average 1.6194720603359616) internal successors, (4724), 2922 states have internal predecessors, (4724), 580 states have call successors, (580), 17 states have call predecessors, (580), 21 states have return successors, (653), 579 states have call predecessors, (653), 579 states have call successors, (653) [2022-11-18 19:34:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 5957 transitions. [2022-11-18 19:34:35,788 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 5957 transitions. Word has length 115 [2022-11-18 19:34:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:35,789 INFO L495 AbstractCegarLoop]: Abstraction has 3519 states and 5957 transitions. [2022-11-18 19:34:35,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 5957 transitions. [2022-11-18 19:34:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 19:34:35,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:35,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:35,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:34:35,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:35,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:35,801 INFO L85 PathProgramCache]: Analyzing trace with hash 541080255, now seen corresponding path program 1 times [2022-11-18 19:34:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598050183] [2022-11-18 19:34:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 19:34:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:34:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 19:34:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 19:34:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 19:34:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 19:34:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:35,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598050183] [2022-11-18 19:34:35,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598050183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:35,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:35,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020822399] [2022-11-18 19:34:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:35,919 INFO L87 Difference]: Start difference. First operand 3519 states and 5957 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:38,193 INFO L93 Difference]: Finished difference Result 8474 states and 14645 transitions. [2022-11-18 19:34:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2022-11-18 19:34:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:38,230 INFO L225 Difference]: With dead ends: 8474 [2022-11-18 19:34:38,230 INFO L226 Difference]: Without dead ends: 5717 [2022-11-18 19:34:38,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:38,244 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1058 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:38,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 845 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:34:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2022-11-18 19:34:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 5550. [2022-11-18 19:34:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5550 states, 4572 states have (on average 1.6132983377077865) internal successors, (7376), 4577 states have internal predecessors, (7376), 956 states have call successors, (956), 17 states have call predecessors, (956), 21 states have return successors, (1073), 955 states have call predecessors, (1073), 955 states have call successors, (1073) [2022-11-18 19:34:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 9405 transitions. [2022-11-18 19:34:38,903 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 9405 transitions. Word has length 116 [2022-11-18 19:34:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:38,904 INFO L495 AbstractCegarLoop]: Abstraction has 5550 states and 9405 transitions. [2022-11-18 19:34:38,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 9405 transitions. [2022-11-18 19:34:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 19:34:38,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:38,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:38,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:34:38,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash 11871883, now seen corresponding path program 1 times [2022-11-18 19:34:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:38,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141505755] [2022-11-18 19:34:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 19:34:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 19:34:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 19:34:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 19:34:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 19:34:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:34:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:39,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:39,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141505755] [2022-11-18 19:34:39,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141505755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:39,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:39,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142905067] [2022-11-18 19:34:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:39,065 INFO L87 Difference]: Start difference. First operand 5550 states and 9405 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:41,716 INFO L93 Difference]: Finished difference Result 13811 states and 23866 transitions. [2022-11-18 19:34:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:41,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-11-18 19:34:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:41,795 INFO L225 Difference]: With dead ends: 13811 [2022-11-18 19:34:41,795 INFO L226 Difference]: Without dead ends: 9400 [2022-11-18 19:34:41,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:41,815 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1056 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:41,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 830 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:34:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2022-11-18 19:34:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 9233. [2022-11-18 19:34:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9233 states, 7649 states have (on average 1.6109295332723232) internal successors, (12322), 7654 states have internal predecessors, (12322), 1562 states have call successors, (1562), 17 states have call predecessors, (1562), 21 states have return successors, (1757), 1561 states have call predecessors, (1757), 1561 states have call successors, (1757) [2022-11-18 19:34:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9233 states to 9233 states and 15641 transitions. [2022-11-18 19:34:42,847 INFO L78 Accepts]: Start accepts. Automaton has 9233 states and 15641 transitions. Word has length 117 [2022-11-18 19:34:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:42,848 INFO L495 AbstractCegarLoop]: Abstraction has 9233 states and 15641 transitions. [2022-11-18 19:34:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9233 states and 15641 transitions. [2022-11-18 19:34:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 19:34:42,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:42,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:42,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:34:42,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1020827343, now seen corresponding path program 1 times [2022-11-18 19:34:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507752315] [2022-11-18 19:34:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 19:34:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 19:34:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:34:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 19:34:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 19:34:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 19:34:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:42,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:42,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507752315] [2022-11-18 19:34:42,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507752315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:42,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:42,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:42,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523381143] [2022-11-18 19:34:42,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:42,997 INFO L87 Difference]: Start difference. First operand 9233 states and 15641 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:46,113 INFO L93 Difference]: Finished difference Result 23995 states and 41412 transitions. [2022-11-18 19:34:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-11-18 19:34:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:46,187 INFO L225 Difference]: With dead ends: 23995 [2022-11-18 19:34:46,188 INFO L226 Difference]: Without dead ends: 16353 [2022-11-18 19:34:46,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:46,212 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1054 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:46,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 878 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:34:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16353 states. [2022-11-18 19:34:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16353 to 16186. [2022-11-18 19:34:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16186 states, 13399 states have (on average 1.6019105903425628) internal successors, (21464), 13404 states have internal predecessors, (21464), 2765 states have call successors, (2765), 17 states have call predecessors, (2765), 21 states have return successors, (3104), 2764 states have call predecessors, (3104), 2764 states have call successors, (3104) [2022-11-18 19:34:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16186 states to 16186 states and 27333 transitions. [2022-11-18 19:34:47,829 INFO L78 Accepts]: Start accepts. Automaton has 16186 states and 27333 transitions. Word has length 118 [2022-11-18 19:34:47,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:47,830 INFO L495 AbstractCegarLoop]: Abstraction has 16186 states and 27333 transitions. [2022-11-18 19:34:47,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 16186 states and 27333 transitions. [2022-11-18 19:34:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-18 19:34:47,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:47,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:47,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:34:47,855 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1052969078, now seen corresponding path program 1 times [2022-11-18 19:34:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:47,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322516630] [2022-11-18 19:34:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 19:34:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 19:34:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 19:34:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 19:34:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 19:34:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 19:34:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:47,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:47,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322516630] [2022-11-18 19:34:47,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322516630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:47,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:47,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146053220] [2022-11-18 19:34:47,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:47,994 INFO L87 Difference]: Start difference. First operand 16186 states and 27333 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:34:52,916 INFO L93 Difference]: Finished difference Result 42961 states and 74011 transitions. [2022-11-18 19:34:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:52,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-11-18 19:34:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:34:53,053 INFO L225 Difference]: With dead ends: 42961 [2022-11-18 19:34:53,053 INFO L226 Difference]: Without dead ends: 29008 [2022-11-18 19:34:53,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:34:53,096 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1053 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:34:53,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 830 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:34:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29008 states. [2022-11-18 19:34:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29008 to 28841. [2022-11-18 19:34:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28841 states, 24015 states have (on average 1.597668124089111) internal successors, (38368), 24020 states have internal predecessors, (38368), 4804 states have call successors, (4804), 17 states have call predecessors, (4804), 21 states have return successors, (5417), 4803 states have call predecessors, (5417), 4803 states have call successors, (5417) [2022-11-18 19:34:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28841 states to 28841 states and 48589 transitions. [2022-11-18 19:34:56,012 INFO L78 Accepts]: Start accepts. Automaton has 28841 states and 48589 transitions. Word has length 119 [2022-11-18 19:34:56,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:34:56,013 INFO L495 AbstractCegarLoop]: Abstraction has 28841 states and 48589 transitions. [2022-11-18 19:34:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:34:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 28841 states and 48589 transitions. [2022-11-18 19:34:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 19:34:56,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:34:56,048 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:56,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:34:56,048 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:34:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1710858159, now seen corresponding path program 1 times [2022-11-18 19:34:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418874165] [2022-11-18 19:34:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:34:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:34:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:34:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:34:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:34:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:34:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 19:34:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 19:34:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 19:34:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 19:34:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 19:34:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 19:34:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:34:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:56,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418874165] [2022-11-18 19:34:56,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418874165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:56,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:56,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:34:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069795732] [2022-11-18 19:34:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:34:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:56,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:34:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:34:56,390 INFO L87 Difference]: Start difference. First operand 28841 states and 48589 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:35:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:35:03,600 INFO L93 Difference]: Finished difference Result 78723 states and 134770 transitions. [2022-11-18 19:35:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:35:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-11-18 19:35:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:35:03,905 INFO L225 Difference]: With dead ends: 78723 [2022-11-18 19:35:03,906 INFO L226 Difference]: Without dead ends: 52887 [2022-11-18 19:35:03,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:35:03,999 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1051 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:35:04,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 833 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:35:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52887 states. [2022-11-18 19:35:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52887 to 52720. [2022-11-18 19:35:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52720 states, 44179 states have (on average 1.5920912650806944) internal successors, (70337), 44184 states have internal predecessors, (70337), 8519 states have call successors, (8519), 17 states have call predecessors, (8519), 21 states have return successors, (9664), 8518 states have call predecessors, (9664), 8518 states have call successors, (9664) [2022-11-18 19:35:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52720 states to 52720 states and 88520 transitions. [2022-11-18 19:35:09,989 INFO L78 Accepts]: Start accepts. Automaton has 52720 states and 88520 transitions. Word has length 120 [2022-11-18 19:35:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:35:09,990 INFO L495 AbstractCegarLoop]: Abstraction has 52720 states and 88520 transitions. [2022-11-18 19:35:09,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 19:35:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 52720 states and 88520 transitions. [2022-11-18 19:35:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-18 19:35:10,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:35:10,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:35:10,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:35:10,019 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:35:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 655942090, now seen corresponding path program 1 times [2022-11-18 19:35:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:10,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487781908] [2022-11-18 19:35:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 19:35:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:35:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 19:35:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 19:35:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 19:35:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:35:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 19:35:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 19:35:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 19:35:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 19:35:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 19:35:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 19:35:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-18 19:35:10,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:10,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487781908] [2022-11-18 19:35:10,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487781908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:35:10,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:35:10,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:35:10,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626081571] [2022-11-18 19:35:10,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:35:10,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:35:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:35:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:35:10,195 INFO L87 Difference]: Start difference. First operand 52720 states and 88520 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)