./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN --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 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc --- 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-6b4ec56 [2022-11-20 11:53:04,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:53:04,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:53:04,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:53:04,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:53:04,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:53:04,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:53:04,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:53:04,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:53:04,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:53:04,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:53:04,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:53:04,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:53:04,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:53:04,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:53:04,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:53:04,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:53:04,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:53:04,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:53:04,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:53:04,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:53:04,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:53:04,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:53:04,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:53:04,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:53:04,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:53:04,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:53:04,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:53:04,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:53:04,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:53:04,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:53:04,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:53:04,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:53:04,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:53:04,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:53:04,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:53:04,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:53:04,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:53:04,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:53:04,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:53:04,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:53:04,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:53:04,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:53:04,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:53:04,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:53:04,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:53:04,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:53:04,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:53:04,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:53:04,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:53:04,861 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:53:04,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:53:04,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:53:04,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:53:04,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:53:04,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:53:04,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:53:04,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:53:04,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:53:04,863 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:53:04,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:53:04,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:53:04,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:53:04,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:53:04,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:53:04,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:53:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:53:04,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:53:04,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:53:04,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:53:04,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:53:04,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:53:04,866 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:53:04,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:53:04,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:53:04,874 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_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc [2022-11-20 11:53:05,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:53:05,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:53:05,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:53:05,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:53:05,155 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:53:05,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2022-11-20 11:53:08,281 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:53:08,557 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:53:08,558 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2022-11-20 11:53:08,585 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/data/1d1b65fc9/87b7a82a204f4d3f8ad7b116714ec06c/FLAG65f502c39 [2022-11-20 11:53:08,605 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/data/1d1b65fc9/87b7a82a204f4d3f8ad7b116714ec06c [2022-11-20 11:53:08,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:53:08,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:53:08,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:53:08,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:53:08,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:53:08,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:08" (1/1) ... [2022-11-20 11:53:08,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2de8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:08, skipping insertion in model container [2022-11-20 11:53:08,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:53:08" (1/1) ... [2022-11-20 11:53:08,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:53:08,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:53:08,963 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2022-11-20 11:53:08,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:53:08,987 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:53:09,049 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2022-11-20 11:53:09,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:53:09,065 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:53:09,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09 WrapperNode [2022-11-20 11:53:09,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:53:09,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:53:09,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:53:09,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:53:09,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,133 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 415 [2022-11-20 11:53:09,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:53:09,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:53:09,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:53:09,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:53:09,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:53:09,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:53:09,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:53:09,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:53:09,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (1/1) ... [2022-11-20 11:53:09,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:53:09,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:09,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:53:09,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:53:09,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:53:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:53:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:53:09,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:53:09,417 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:53:09,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:53:10,352 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:53:10,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:53:10,360 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:53:10,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:10 BoogieIcfgContainer [2022-11-20 11:53:10,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:53:10,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:53:10,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:53:10,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:53:10,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:53:08" (1/3) ... [2022-11-20 11:53:10,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4e3092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:10, skipping insertion in model container [2022-11-20 11:53:10,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:53:09" (2/3) ... [2022-11-20 11:53:10,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4e3092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:53:10, skipping insertion in model container [2022-11-20 11:53:10,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:10" (3/3) ... [2022-11-20 11:53:10,372 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2022-11-20 11:53:10,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:53:10,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:53:10,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:53:10,452 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;@16a31b4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:53:10,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:53:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:53:10,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:10,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:10,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:10,471 INFO L85 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2022-11-20 11:53:10,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:10,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108671840] [2022-11-20 11:53:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:10,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108671840] [2022-11-20 11:53:10,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108671840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:10,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:10,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:53:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801172439] [2022-11-20 11:53:10,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:10,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:53:10,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:10,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:53:10,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:53:10,713 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:10,773 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2022-11-20 11:53:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:53:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:53:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:10,790 INFO L225 Difference]: With dead ends: 216 [2022-11-20 11:53:10,790 INFO L226 Difference]: Without dead ends: 100 [2022-11-20 11:53:10,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:53:10,802 INFO L413 NwaCegarLoop]: 199 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, 199 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 [2022-11-20 11:53:10,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-20 11:53:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-20 11:53:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2022-11-20 11:53:10,851 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2022-11-20 11:53:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:10,851 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2022-11-20 11:53:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2022-11-20 11:53:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 11:53:10,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:10,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:10,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:53:10,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:10,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2022-11-20 11:53:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:10,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363057532] [2022-11-20 11:53:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:10,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363057532] [2022-11-20 11:53:10,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363057532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:10,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:10,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506238392] [2022-11-20 11:53:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:10,935 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:10,982 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2022-11-20 11:53:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:10,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 11:53:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:10,984 INFO L225 Difference]: With dead ends: 201 [2022-11-20 11:53:10,985 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 11:53:10,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:10,987 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:10,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 308 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 11:53:10,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-20 11:53:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2022-11-20 11:53:10,997 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2022-11-20 11:53:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:10,998 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2022-11-20 11:53:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2022-11-20 11:53:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:53:10,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:10,999 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:53:11,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2022-11-20 11:53:11,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:11,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504887963] [2022-11-20 11:53:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:11,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:11,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504887963] [2022-11-20 11:53:11,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504887963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:11,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:11,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:53:11,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764638379] [2022-11-20 11:53:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:11,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:53:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:11,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:53:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:53:11,664 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:12,053 INFO L93 Difference]: Finished difference Result 207 states and 335 transitions. [2022-11-20 11:53:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:53:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 11:53:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:12,056 INFO L225 Difference]: With dead ends: 207 [2022-11-20 11:53:12,056 INFO L226 Difference]: Without dead ends: 188 [2022-11-20 11:53:12,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:53:12,058 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 128 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:12,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 378 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:53:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-20 11:53:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2022-11-20 11:53:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2022-11-20 11:53:12,079 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2022-11-20 11:53:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:12,079 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2022-11-20 11:53:12,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2022-11-20 11:53:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:53:12,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:12,082 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:12,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:53:12,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2022-11-20 11:53:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:12,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173561221] [2022-11-20 11:53:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:12,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:12,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173561221] [2022-11-20 11:53:12,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173561221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:12,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:12,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399543332] [2022-11-20 11:53:12,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:12,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:12,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:12,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:12,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:12,127 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:12,157 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2022-11-20 11:53:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:12,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:53:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:12,159 INFO L225 Difference]: With dead ends: 293 [2022-11-20 11:53:12,160 INFO L226 Difference]: Without dead ends: 124 [2022-11-20 11:53:12,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:12,162 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 30 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:12,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 283 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-20 11:53:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2022-11-20 11:53:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2022-11-20 11:53:12,172 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2022-11-20 11:53:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:12,172 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2022-11-20 11:53:12,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2022-11-20 11:53:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 11:53:12,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:12,174 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:12,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:53:12,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:12,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2022-11-20 11:53:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:12,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090164040] [2022-11-20 11:53:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:12,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:53:12,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:12,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090164040] [2022-11-20 11:53:12,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090164040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:12,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:12,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710042029] [2022-11-20 11:53:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:12,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:12,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:12,234 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:12,267 INFO L93 Difference]: Finished difference Result 248 states and 395 transitions. [2022-11-20 11:53:12,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 11:53:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:12,269 INFO L225 Difference]: With dead ends: 248 [2022-11-20 11:53:12,269 INFO L226 Difference]: Without dead ends: 129 [2022-11-20 11:53:12,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:12,271 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:12,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 282 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-20 11:53:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2022-11-20 11:53:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5793650793650793) internal successors, (199), 126 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 199 transitions. [2022-11-20 11:53:12,280 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 199 transitions. Word has length 21 [2022-11-20 11:53:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:12,280 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 199 transitions. [2022-11-20 11:53:12,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 199 transitions. [2022-11-20 11:53:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:53:12,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:12,282 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:12,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:53:12,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:12,283 INFO L85 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2022-11-20 11:53:12,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:12,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192908636] [2022-11-20 11:53:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:12,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:12,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:12,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192908636] [2022-11-20 11:53:12,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192908636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:12,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368072439] [2022-11-20 11:53:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:12,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:12,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:12,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:12,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:53:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:12,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:53:12,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:12,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:12,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368072439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:12,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:12,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-20 11:53:12,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987553781] [2022-11-20 11:53:12,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:12,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:53:12,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:12,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:53:12,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:53:12,736 INFO L87 Difference]: Start difference. First operand 127 states and 199 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:12,922 INFO L93 Difference]: Finished difference Result 237 states and 373 transitions. [2022-11-20 11:53:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:53:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 11:53:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:12,923 INFO L225 Difference]: With dead ends: 237 [2022-11-20 11:53:12,924 INFO L226 Difference]: Without dead ends: 214 [2022-11-20 11:53:12,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:53:12,925 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 566 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:12,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 538 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:53:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-20 11:53:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2022-11-20 11:53:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.5679611650485437) internal successors, (323), 206 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 323 transitions. [2022-11-20 11:53:12,937 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 323 transitions. Word has length 23 [2022-11-20 11:53:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:12,937 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 323 transitions. [2022-11-20 11:53:12,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 323 transitions. [2022-11-20 11:53:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:53:12,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:12,939 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:12,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:53:13,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:13,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:13,145 INFO L85 PathProgramCache]: Analyzing trace with hash 665435966, now seen corresponding path program 1 times [2022-11-20 11:53:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:13,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620360611] [2022-11-20 11:53:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:13,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620360611] [2022-11-20 11:53:13,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620360611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:13,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567555235] [2022-11-20 11:53:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:13,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:13,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:13,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:13,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:53:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:13,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:53:13,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:13,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:13,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567555235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:13,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:53:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097145874] [2022-11-20 11:53:13,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:53:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:53:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:53:13,967 INFO L87 Difference]: Start difference. First operand 207 states and 323 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:14,234 INFO L93 Difference]: Finished difference Result 235 states and 357 transitions. [2022-11-20 11:53:14,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:53:14,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 11:53:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:14,236 INFO L225 Difference]: With dead ends: 235 [2022-11-20 11:53:14,236 INFO L226 Difference]: Without dead ends: 232 [2022-11-20 11:53:14,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:53:14,237 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 114 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:14,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 684 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:53:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-20 11:53:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2022-11-20 11:53:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5580357142857142) internal successors, (349), 224 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 349 transitions. [2022-11-20 11:53:14,258 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 349 transitions. Word has length 24 [2022-11-20 11:53:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:14,258 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 349 transitions. [2022-11-20 11:53:14,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 349 transitions. [2022-11-20 11:53:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 11:53:14,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:14,259 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:14,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:53:14,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:14,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2022-11-20 11:53:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:14,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184457635] [2022-11-20 11:53:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:14,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:53:14,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:14,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184457635] [2022-11-20 11:53:14,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184457635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:14,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:14,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154145416] [2022-11-20 11:53:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:14,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:14,703 INFO L87 Difference]: Start difference. First operand 225 states and 349 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:14,799 INFO L93 Difference]: Finished difference Result 228 states and 351 transitions. [2022-11-20 11:53:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 11:53:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:14,801 INFO L225 Difference]: With dead ends: 228 [2022-11-20 11:53:14,801 INFO L226 Difference]: Without dead ends: 221 [2022-11-20 11:53:14,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:14,805 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 142 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:14,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 140 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:53:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-20 11:53:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2022-11-20 11:53:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.54337899543379) internal successors, (338), 219 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 338 transitions. [2022-11-20 11:53:14,825 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 338 transitions. Word has length 27 [2022-11-20 11:53:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:14,827 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 338 transitions. [2022-11-20 11:53:14,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 338 transitions. [2022-11-20 11:53:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:53:14,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:14,832 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:14,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:53:14,833 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:14,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 338445793, now seen corresponding path program 1 times [2022-11-20 11:53:14,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:14,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924648338] [2022-11-20 11:53:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:53:14,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:14,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924648338] [2022-11-20 11:53:14,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924648338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:14,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:14,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:14,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969761645] [2022-11-20 11:53:14,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:14,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:14,912 INFO L87 Difference]: Start difference. First operand 220 states and 338 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:14,950 INFO L93 Difference]: Finished difference Result 411 states and 630 transitions. [2022-11-20 11:53:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:14,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 11:53:14,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:14,952 INFO L225 Difference]: With dead ends: 411 [2022-11-20 11:53:14,952 INFO L226 Difference]: Without dead ends: 194 [2022-11-20 11:53:14,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:14,953 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 61 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:14,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 184 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-20 11:53:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2022-11-20 11:53:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4973821989528795) internal successors, (286), 191 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 286 transitions. [2022-11-20 11:53:14,965 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 286 transitions. Word has length 30 [2022-11-20 11:53:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:14,966 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 286 transitions. [2022-11-20 11:53:14,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 286 transitions. [2022-11-20 11:53:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 11:53:14,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:14,967 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:53:14,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1822717533, now seen corresponding path program 1 times [2022-11-20 11:53:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:14,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560288068] [2022-11-20 11:53:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:53:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:15,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560288068] [2022-11-20 11:53:15,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560288068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:15,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252322737] [2022-11-20 11:53:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:15,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:15,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:15,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:15,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:53:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:53:15,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:53:15,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:53:15,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252322737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:15,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:15,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:53:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488507411] [2022-11-20 11:53:15,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:15,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:53:15,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:53:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:53:15,619 INFO L87 Difference]: Start difference. First operand 192 states and 286 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:16,203 INFO L93 Difference]: Finished difference Result 263 states and 384 transitions. [2022-11-20 11:53:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:53:16,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-20 11:53:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:16,205 INFO L225 Difference]: With dead ends: 263 [2022-11-20 11:53:16,205 INFO L226 Difference]: Without dead ends: 250 [2022-11-20 11:53:16,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:53:16,206 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 588 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:16,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 781 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:53:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-20 11:53:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 184. [2022-11-20 11:53:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4754098360655739) internal successors, (270), 183 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 270 transitions. [2022-11-20 11:53:16,222 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 270 transitions. Word has length 33 [2022-11-20 11:53:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:16,222 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 270 transitions. [2022-11-20 11:53:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 270 transitions. [2022-11-20 11:53:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:53:16,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:16,224 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:16,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:53:16,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:53:16,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2082949584, now seen corresponding path program 1 times [2022-11-20 11:53:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:16,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267803769] [2022-11-20 11:53:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:17,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267803769] [2022-11-20 11:53:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267803769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817223738] [2022-11-20 11:53:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:17,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:17,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:17,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:53:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:17,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:53:17,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:17,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:18,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817223738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:18,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:18,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-20 11:53:18,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516194352] [2022-11-20 11:53:18,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:18,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:53:18,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:18,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:53:18,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:53:18,117 INFO L87 Difference]: Start difference. First operand 184 states and 270 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:18,499 INFO L93 Difference]: Finished difference Result 424 states and 623 transitions. [2022-11-20 11:53:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:53:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 11:53:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:18,502 INFO L225 Difference]: With dead ends: 424 [2022-11-20 11:53:18,502 INFO L226 Difference]: Without dead ends: 282 [2022-11-20 11:53:18,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:53:18,503 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 261 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:18,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1180 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:53:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-20 11:53:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 234. [2022-11-20 11:53:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4849785407725322) internal successors, (346), 233 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 346 transitions. [2022-11-20 11:53:18,524 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 346 transitions. Word has length 36 [2022-11-20 11:53:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:18,525 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 346 transitions. [2022-11-20 11:53:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 346 transitions. [2022-11-20 11:53:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 11:53:18,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:18,526 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:18,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:53:18,733 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2022-11-20 11:53:18,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:18,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041661142] [2022-11-20 11:53:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:53:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:18,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041661142] [2022-11-20 11:53:18,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041661142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:18,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:18,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:18,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482112132] [2022-11-20 11:53:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:18,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:18,798 INFO L87 Difference]: Start difference. First operand 234 states and 346 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:18,838 INFO L93 Difference]: Finished difference Result 409 states and 601 transitions. [2022-11-20 11:53:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:18,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-20 11:53:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:18,841 INFO L225 Difference]: With dead ends: 409 [2022-11-20 11:53:18,842 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 11:53:18,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:18,843 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 24 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:18,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 184 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:18,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 11:53:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-11-20 11:53:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.439252336448598) internal successors, (308), 214 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 308 transitions. [2022-11-20 11:53:18,863 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 308 transitions. Word has length 37 [2022-11-20 11:53:18,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:18,863 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 308 transitions. [2022-11-20 11:53:18,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 308 transitions. [2022-11-20 11:53:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:53:18,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:18,864 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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] [2022-11-20 11:53:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:53:18,865 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1520465566, now seen corresponding path program 1 times [2022-11-20 11:53:18,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:18,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004829093] [2022-11-20 11:53:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 11:53:18,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004829093] [2022-11-20 11:53:18,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004829093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:18,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:18,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:53:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761590523] [2022-11-20 11:53:18,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:18,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:53:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:53:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:18,931 INFO L87 Difference]: Start difference. First operand 215 states and 308 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:18,964 INFO L93 Difference]: Finished difference Result 293 states and 418 transitions. [2022-11-20 11:53:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:18,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 11:53:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:18,966 INFO L225 Difference]: With dead ends: 293 [2022-11-20 11:53:18,966 INFO L226 Difference]: Without dead ends: 139 [2022-11-20 11:53:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:53:18,968 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 25 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:18,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 170 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:53:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-20 11:53:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2022-11-20 11:53:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4044117647058822) internal successors, (191), 136 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 191 transitions. [2022-11-20 11:53:18,981 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 191 transitions. Word has length 48 [2022-11-20 11:53:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:18,982 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 191 transitions. [2022-11-20 11:53:18,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 191 transitions. [2022-11-20 11:53:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 11:53:18,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:18,983 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2022-11-20 11:53:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:53:18,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1003777494, now seen corresponding path program 1 times [2022-11-20 11:53:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268514597] [2022-11-20 11:53:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:19,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:19,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268514597] [2022-11-20 11:53:19,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268514597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:19,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067796684] [2022-11-20 11:53:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:19,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:19,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:19,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:19,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:53:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:19,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:53:19,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:20,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:20,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067796684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:20,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:20,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-20 11:53:20,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711228895] [2022-11-20 11:53:20,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:20,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:53:20,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:53:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:53:20,494 INFO L87 Difference]: Start difference. First operand 137 states and 191 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:20,817 INFO L93 Difference]: Finished difference Result 164 states and 225 transitions. [2022-11-20 11:53:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:53:20,818 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-20 11:53:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:20,819 INFO L225 Difference]: With dead ends: 164 [2022-11-20 11:53:20,820 INFO L226 Difference]: Without dead ends: 162 [2022-11-20 11:53:20,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:53:20,821 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 253 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:20,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 868 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:53:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-20 11:53:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 137. [2022-11-20 11:53:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3897058823529411) internal successors, (189), 136 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 189 transitions. [2022-11-20 11:53:20,836 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 189 transitions. Word has length 51 [2022-11-20 11:53:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:20,837 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 189 transitions. [2022-11-20 11:53:20,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 189 transitions. [2022-11-20 11:53:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 11:53:20,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:20,839 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 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] [2022-11-20 11:53:20,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:21,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:53:21,045 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:53:21,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash 751253453, now seen corresponding path program 1 times [2022-11-20 11:53:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:21,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575336604] [2022-11-20 11:53:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:22,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575336604] [2022-11-20 11:53:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575336604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457282065] [2022-11-20 11:53:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:22,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:22,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:22,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:22,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:53:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:22,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:53:22,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:22,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:22,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457282065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:22,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:22,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2022-11-20 11:53:22,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094549088] [2022-11-20 11:53:22,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:53:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:22,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:53:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:53:22,963 INFO L87 Difference]: Start difference. First operand 137 states and 189 transitions. Second operand has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:24,035 INFO L93 Difference]: Finished difference Result 261 states and 360 transitions. [2022-11-20 11:53:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:53:24,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-20 11:53:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:24,037 INFO L225 Difference]: With dead ends: 261 [2022-11-20 11:53:24,037 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:53:24,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:53:24,039 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 544 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:24,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1047 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:53:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:53:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:53:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:53:24,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-11-20 11:53:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:24,041 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:53:24,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:53:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:53:24,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:53:24,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:53:24,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:24,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:53:24,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:53:25,451 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2022-11-20 11:53:25,452 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2022-11-20 11:53:25,452 INFO L899 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2022-11-20 11:53:25,452 INFO L899 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2022-11-20 11:53:25,452 INFO L899 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2022-11-20 11:53:25,452 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2022-11-20 11:53:25,453 INFO L899 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2022-11-20 11:53:25,454 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2022-11-20 11:53:25,455 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2022-11-20 11:53:25,455 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2022-11-20 11:53:25,455 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2022-11-20 11:53:25,455 INFO L899 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2022-11-20 11:53:25,455 INFO L899 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2022-11-20 11:53:25,455 INFO L899 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2022-11-20 11:53:25,456 INFO L899 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2022-11-20 11:53:25,457 INFO L899 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2022-11-20 11:53:25,458 INFO L902 garLoopResultBuilder]: At program point L16(lines 16 568) the Hoare annotation is: true [2022-11-20 11:53:25,458 INFO L899 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2022-11-20 11:53:25,458 INFO L899 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2022-11-20 11:53:25,458 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2022-11-20 11:53:25,458 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2022-11-20 11:53:25,458 INFO L899 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2022-11-20 11:53:25,459 INFO L899 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2022-11-20 11:53:25,459 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2022-11-20 11:53:25,459 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2022-11-20 11:53:25,459 INFO L899 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2022-11-20 11:53:25,459 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2022-11-20 11:53:25,459 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2022-11-20 11:53:25,460 INFO L899 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2022-11-20 11:53:25,460 INFO L899 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2022-11-20 11:53:25,460 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:53:25,460 INFO L899 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2022-11-20 11:53:25,460 INFO L895 garLoopResultBuilder]: At program point L549(lines 16 568) the Hoare annotation is: false [2022-11-20 11:53:25,460 INFO L899 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2022-11-20 11:53:25,460 INFO L899 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2022-11-20 11:53:25,461 INFO L899 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2022-11-20 11:53:25,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:53:25,461 INFO L895 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0)) (.cse1 (<= 0 |ULTIMATE.start_main_~this_buffer_empty~0#1|))) (or (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1) (and .cse0 (<= |ULTIMATE.start_main_~this_expect~0#1| (* 2 (div |ULTIMATE.start_main_~this_expect~0#1| 2))) (< (div |ULTIMATE.start_main_~P8~0#1| 4294967296) (+ (div (+ |ULTIMATE.start_main_~this_expect~0#1| (* (div (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2) (- 2)) 1) 4294967296) 1)) .cse1 (<= 5 |ULTIMATE.start_main_~q~0#1|) (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))))) [2022-11-20 11:53:25,461 INFO L899 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2022-11-20 11:53:25,461 INFO L899 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2022-11-20 11:53:25,462 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2022-11-20 11:53:25,463 INFO L899 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2022-11-20 11:53:25,463 INFO L899 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2022-11-20 11:53:25,463 INFO L899 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2022-11-20 11:53:25,463 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2022-11-20 11:53:25,463 INFO L899 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2022-11-20 11:53:25,463 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2022-11-20 11:53:25,464 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2022-11-20 11:53:25,464 INFO L899 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2022-11-20 11:53:25,464 INFO L895 garLoopResultBuilder]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~this_buffer_empty~0#1| 0)) (.cse1 (<= 0 |ULTIMATE.start_main_~this_buffer_empty~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~this_expect~0#1| (* 2 (div |ULTIMATE.start_main_~this_expect~0#1| 2)))) (.cse3 (< (div |ULTIMATE.start_main_~P8~0#1| 4294967296) (+ (div (+ |ULTIMATE.start_main_~this_expect~0#1| (* (div (+ |ULTIMATE.start_main_~this_expect~0#1| 1) 2) (- 2)) 1) 4294967296) 1))) (.cse4 (<= 0 (+ |ULTIMATE.start_main_~P8~0#1| 2147483648))) (.cse5 (= |ULTIMATE.start_main_~this_buffer_empty~0#1| 1))) (or (and (= |ULTIMATE.start_main_~this_expect~0#1| 0) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1) (and .cse0 .cse2 .cse3 .cse1 (<= 5 |ULTIMATE.start_main_~q~0#1|) .cse4) (and (= |ULTIMATE.start_main_~q~0#1| 4) .cse3 (<= |ULTIMATE.start_main_~this_expect~0#1| (+ (* 2 (div (+ (- 1) |ULTIMATE.start_main_~this_expect~0#1|) 2)) 1)) .cse4 .cse5) (and .cse0 (= 3 |ULTIMATE.start_main_~q~0#1|) .cse3 .cse1 (= (mod (mod |ULTIMATE.start_main_~this_expect~0#1| 2) 4294967296) 1) .cse4) (and .cse2 (= |ULTIMATE.start_main_~q~0#1| 1) .cse3 .cse4 .cse5))) [2022-11-20 11:53:25,464 INFO L899 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2022-11-20 11:53:25,464 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2022-11-20 11:53:25,465 INFO L899 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2022-11-20 11:53:25,466 INFO L899 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2022-11-20 11:53:25,466 INFO L899 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2022-11-20 11:53:25,466 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2022-11-20 11:53:25,466 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2022-11-20 11:53:25,466 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:53:25,466 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2022-11-20 11:53:25,467 INFO L899 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2022-11-20 11:53:25,467 INFO L899 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2022-11-20 11:53:25,467 INFO L899 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2022-11-20 11:53:25,467 INFO L899 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2022-11-20 11:53:25,467 INFO L899 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2022-11-20 11:53:25,467 INFO L899 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2022-11-20 11:53:25,468 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2022-11-20 11:53:25,472 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:25,474 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:53:25,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:53:25 BoogieIcfgContainer [2022-11-20 11:53:25,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:53:25,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:53:25,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:53:25,492 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:53:25,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:53:10" (3/4) ... [2022-11-20 11:53:25,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:53:25,510 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-20 11:53:25,510 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:53:25,510 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:53:25,510 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:53:25,538 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:53:25,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:53:25,539 INFO L158 Benchmark]: Toolchain (without parser) took 16924.93ms. Allocated memory was 172.0MB in the beginning and 308.3MB in the end (delta: 136.3MB). Free memory was 129.8MB in the beginning and 233.3MB in the end (delta: -103.5MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2022-11-20 11:53:25,539 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 71.5MB in the beginning and 71.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:53:25,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.08ms. Allocated memory is still 172.0MB. Free memory was 129.8MB in the beginning and 110.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 11:53:25,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.40ms. Allocated memory is still 172.0MB. Free memory was 110.1MB in the beginning and 105.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:53:25,540 INFO L158 Benchmark]: Boogie Preprocessor took 74.24ms. Allocated memory is still 172.0MB. Free memory was 105.3MB in the beginning and 102.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:53:25,541 INFO L158 Benchmark]: RCFGBuilder took 1153.34ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 119.7MB in the end (delta: -17.1MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-11-20 11:53:25,541 INFO L158 Benchmark]: TraceAbstraction took 15126.78ms. Allocated memory was 172.0MB in the beginning and 308.3MB in the end (delta: 136.3MB). Free memory was 119.7MB in the beginning and 235.4MB in the end (delta: -115.8MB). Peak memory consumption was 165.1MB. Max. memory is 16.1GB. [2022-11-20 11:53:25,541 INFO L158 Benchmark]: Witness Printer took 46.10ms. Allocated memory is still 308.3MB. Free memory was 235.4MB in the beginning and 233.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:53:25,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 71.5MB in the beginning and 71.4MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 450.08ms. Allocated memory is still 172.0MB. Free memory was 129.8MB in the beginning and 110.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.40ms. Allocated memory is still 172.0MB. Free memory was 110.1MB in the beginning and 105.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.24ms. Allocated memory is still 172.0MB. Free memory was 105.3MB in the beginning and 102.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1153.34ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 119.7MB in the end (delta: -17.1MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15126.78ms. Allocated memory was 172.0MB in the beginning and 308.3MB in the end (delta: 136.3MB). Free memory was 119.7MB in the beginning and 235.4MB in the end (delta: -115.8MB). Peak memory consumption was 165.1MB. Max. memory is 16.1GB. * Witness Printer took 46.10ms. Allocated memory is still 308.3MB. Free memory was 235.4MB in the beginning and 233.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.0s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2772 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2772 mSDsluCounter, 7226 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4849 mSDsCounter, 261 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1187 IncrementalHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 261 mSolverCounterUnsat, 2377 mSDtfsCounter, 1187 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=11, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 180 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 36 NumberOfFragments, 228 HoareAnnotationTreeSize, 4 FomulaSimplifications, 210 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 6334 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 661 NumberOfCodeBlocks, 661 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 8674 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 27 InterpolantComputations, 9 PerfectInterpolantSequences, 241/488 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((((this_expect == 0 && this_buffer_empty <= 0) && q == 0) && 0 <= this_buffer_empty) || (((((this_buffer_empty <= 0 && this_expect <= 2 * (this_expect / 2)) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= this_buffer_empty) && 5 <= q) && 0 <= P8 + 2147483648)) || ((((q == 4 && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && this_expect <= 2 * ((-1 + this_expect) / 2) + 1) && 0 <= P8 + 2147483648) && this_buffer_empty == 1)) || (((((this_buffer_empty <= 0 && 3 == q) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= this_buffer_empty) && this_expect % 2 % 4294967296 == 1) && 0 <= P8 + 2147483648)) || ((((this_expect <= 2 * (this_expect / 2) && q == 1) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= P8 + 2147483648) && this_buffer_empty == 1) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((this_expect == 0 && this_buffer_empty <= 0) && q == 0) && 0 <= this_buffer_empty) || (((((this_buffer_empty <= 0 && this_expect <= 2 * (this_expect / 2)) && P8 / 4294967296 < (this_expect + (this_expect + 1) / 2 * -2 + 1) / 4294967296 + 1) && 0 <= this_buffer_empty) && 5 <= q) && 0 <= P8 + 2147483648) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:53:25,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635b9505-5a57-47ef-bd0c-056d952873a3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE