./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 1a770e072308583e36326282bebae23c1c98c748d42f3621fe7141c74e78b303 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:54,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:54,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:33:54,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:54,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:54,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:54,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:54,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:54,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:54,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:54,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:54,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:54,809 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:54,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:54,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:54,812 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:54,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:54,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:54,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:54,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:54,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:54,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:54,816 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:54,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:54,817 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:54,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:54,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:54,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:54,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:54,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:54,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:54,822 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:54,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:54,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:54,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:54,823 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:54,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:54,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:54,824 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:54,824 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a770e072308583e36326282bebae23c1c98c748d42f3621fe7141c74e78b303 [2023-11-19 07:33:55,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:55,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:55,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:55,147 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:55,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:55,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2023-11-19 07:33:58,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:58,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:58,813 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2023-11-19 07:33:58,862 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/data/cd5f9ccc4/521250d635894950b392ffa53f6c1f6b/FLAG8996020fe [2023-11-19 07:33:58,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/data/cd5f9ccc4/521250d635894950b392ffa53f6c1f6b [2023-11-19 07:33:58,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:58,892 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:58,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:58,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:58,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:58,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a7a1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58, skipping insertion in model container [2023-11-19 07:33:58,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:59,091 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:59,491 WARN L240 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_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[6354,6367] [2023-11-19 07:33:59,525 WARN L240 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_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[7196,7209] [2023-11-19 07:34:00,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:00,610 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:00,650 WARN L240 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_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[6354,6367] [2023-11-19 07:34:00,658 WARN L240 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_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[7196,7209] [2023-11-19 07:34:01,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:01,332 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:01,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01 WrapperNode [2023-11-19 07:34:01,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:01,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:01,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:01,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:01,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:01,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:01,704 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4979 [2023-11-19 07:34:01,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:01,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:01,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:01,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:01,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:01,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:01,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:01,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:02,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:02,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:02,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:02,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:02,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:02,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:02,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:02,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:02,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (1/1) ... [2023-11-19 07:34:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:02,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:02,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:02,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:02,671 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:02,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:07,683 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:07,704 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:07,704 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:34:07,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:07 BoogieIcfgContainer [2023-11-19 07:34:07,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:07,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:07,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:07,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:07,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:58" (1/3) ... [2023-11-19 07:34:07,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dcd1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:07, skipping insertion in model container [2023-11-19 07:34:07,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:01" (2/3) ... [2023-11-19 07:34:07,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dcd1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:07, skipping insertion in model container [2023-11-19 07:34:07,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:07" (3/3) ... [2023-11-19 07:34:07,724 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2023-11-19 07:34:07,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:07,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:34:07,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:07,823 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=LoopHeads, 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;@bf88989, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:07,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:34:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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) [2023-11-19 07:34:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:34:07,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:07,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:07,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:07,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2037018396, now seen corresponding path program 1 times [2023-11-19 07:34:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194743726] [2023-11-19 07:34:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194743726] [2023-11-19 07:34:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194743726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:08,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:08,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:34:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912500259] [2023-11-19 07:34:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:08,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:08,146 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-19 07:34:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:12,770 INFO L93 Difference]: Finished difference Result 2477 states and 4776 transitions. [2023-11-19 07:34:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:12,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-19 07:34:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:12,797 INFO L225 Difference]: With dead ends: 2477 [2023-11-19 07:34:12,797 INFO L226 Difference]: Without dead ends: 1557 [2023-11-19 07:34:12,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:12,848 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 941 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:12,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 192 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 07:34:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2023-11-19 07:34:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1557. [2023-11-19 07:34:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1555 states have (on average 1.8643086816720258) internal successors, (2899), 1556 states have internal predecessors, (2899), 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) [2023-11-19 07:34:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2899 transitions. [2023-11-19 07:34:12,974 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2899 transitions. Word has length 7 [2023-11-19 07:34:12,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:12,974 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2899 transitions. [2023-11-19 07:34:12,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-19 07:34:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2899 transitions. [2023-11-19 07:34:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:34:12,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:12,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:12,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:12,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:12,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2023-11-19 07:34:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002953365] [2023-11-19 07:34:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:13,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002953365] [2023-11-19 07:34:13,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002953365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:13,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:13,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:13,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304774451] [2023-11-19 07:34:13,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:13,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:13,162 INFO L87 Difference]: Start difference. First operand 1557 states and 2899 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2023-11-19 07:34:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:13,269 INFO L93 Difference]: Finished difference Result 1621 states and 2997 transitions. [2023-11-19 07:34:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:13,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 20 [2023-11-19 07:34:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:13,281 INFO L225 Difference]: With dead ends: 1621 [2023-11-19 07:34:13,281 INFO L226 Difference]: Without dead ends: 1587 [2023-11-19 07:34:13,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:13,286 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 48 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:13,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6058 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2023-11-19 07:34:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1557. [2023-11-19 07:34:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1555 states have (on average 1.8540192926045016) internal successors, (2883), 1556 states have internal predecessors, (2883), 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) [2023-11-19 07:34:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2883 transitions. [2023-11-19 07:34:13,340 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2883 transitions. Word has length 20 [2023-11-19 07:34:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:13,341 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2883 transitions. [2023-11-19 07:34:13,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2023-11-19 07:34:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2883 transitions. [2023-11-19 07:34:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:34:13,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:13,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:13,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:13,345 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:13,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:13,346 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2023-11-19 07:34:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643583992] [2023-11-19 07:34:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:13,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:13,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643583992] [2023-11-19 07:34:13,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643583992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:13,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:13,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066942685] [2023-11-19 07:34:13,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:13,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:13,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:13,570 INFO L87 Difference]: Start difference. First operand 1557 states and 2883 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-19 07:34:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:13,706 INFO L93 Difference]: Finished difference Result 1737 states and 3165 transitions. [2023-11-19 07:34:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:13,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2023-11-19 07:34:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:13,719 INFO L225 Difference]: With dead ends: 1737 [2023-11-19 07:34:13,719 INFO L226 Difference]: Without dead ends: 1707 [2023-11-19 07:34:13,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:13,728 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-11-19 07:34:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1585. [2023-11-19 07:34:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.8490208464939988) internal successors, (2927), 1584 states have internal predecessors, (2927), 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) [2023-11-19 07:34:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2927 transitions. [2023-11-19 07:34:13,782 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2927 transitions. Word has length 35 [2023-11-19 07:34:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:13,783 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2927 transitions. [2023-11-19 07:34:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-19 07:34:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2927 transitions. [2023-11-19 07:34:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:34:13,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:13,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:13,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:13,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2023-11-19 07:34:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196442594] [2023-11-19 07:34:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196442594] [2023-11-19 07:34:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196442594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:13,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:13,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700323008] [2023-11-19 07:34:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:13,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:13,936 INFO L87 Difference]: Start difference. First operand 1585 states and 2927 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-19 07:34:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:13,987 INFO L93 Difference]: Finished difference Result 1690 states and 3090 transitions. [2023-11-19 07:34:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 [2023-11-19 07:34:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:13,998 INFO L225 Difference]: With dead ends: 1690 [2023-11-19 07:34:13,999 INFO L226 Difference]: Without dead ends: 1632 [2023-11-19 07:34:14,002 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 [2023-11-19 07:34:14,008 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:14,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:14,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-19 07:34:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-11-19 07:34:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8396805896805897) internal successors, (2995), 1629 states have internal predecessors, (2995), 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) [2023-11-19 07:34:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2995 transitions. [2023-11-19 07:34:14,058 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2995 transitions. Word has length 37 [2023-11-19 07:34:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:14,059 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2995 transitions. [2023-11-19 07:34:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-19 07:34:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2995 transitions. [2023-11-19 07:34:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:34:14,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:14,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:14,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:14,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2023-11-19 07:34:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908165427] [2023-11-19 07:34:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:14,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:14,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908165427] [2023-11-19 07:34:14,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908165427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:14,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:14,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:14,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673399545] [2023-11-19 07:34:14,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:14,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:14,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:14,275 INFO L87 Difference]: Start difference. First operand 1630 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2023-11-19 07:34:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:14,370 INFO L93 Difference]: Finished difference Result 1735 states and 3155 transitions. [2023-11-19 07:34:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:14,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 [2023-11-19 07:34:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:14,380 INFO L225 Difference]: With dead ends: 1735 [2023-11-19 07:34:14,381 INFO L226 Difference]: Without dead ends: 1632 [2023-11-19 07:34:14,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:14,383 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 4417 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:14,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 1589 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-19 07:34:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-11-19 07:34:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8384520884520885) internal successors, (2993), 1629 states have internal predecessors, (2993), 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) [2023-11-19 07:34:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2993 transitions. [2023-11-19 07:34:14,430 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2993 transitions. Word has length 37 [2023-11-19 07:34:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:14,431 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2993 transitions. [2023-11-19 07:34:14,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2023-11-19 07:34:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2993 transitions. [2023-11-19 07:34:14,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:34:14,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:14,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:14,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:14,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:14,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:14,434 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2023-11-19 07:34:14,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:14,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153650473] [2023-11-19 07:34:14,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:14,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:14,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153650473] [2023-11-19 07:34:14,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153650473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:14,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:14,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:14,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697295190] [2023-11-19 07:34:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:14,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:14,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:14,633 INFO L87 Difference]: Start difference. First operand 1630 states and 2993 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2023-11-19 07:34:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:14,716 INFO L93 Difference]: Finished difference Result 1701 states and 3102 transitions. [2023-11-19 07:34:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 38 [2023-11-19 07:34:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:14,730 INFO L225 Difference]: With dead ends: 1701 [2023-11-19 07:34:14,730 INFO L226 Difference]: Without dead ends: 1699 [2023-11-19 07:34:14,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:14,737 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 35 mSDsluCounter, 4568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6104 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 [2023-11-19 07:34:14,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6104 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-11-19 07:34:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1636. [2023-11-19 07:34:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8347613219094248) internal successors, (2998), 1635 states have internal predecessors, (2998), 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) [2023-11-19 07:34:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2998 transitions. [2023-11-19 07:34:14,785 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2998 transitions. Word has length 38 [2023-11-19 07:34:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:14,786 INFO L495 AbstractCegarLoop]: Abstraction has 1636 states and 2998 transitions. [2023-11-19 07:34:14,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2023-11-19 07:34:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2998 transitions. [2023-11-19 07:34:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:34:14,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:14,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:14,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:34:14,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:14,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:14,793 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2023-11-19 07:34:14,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:14,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012696610] [2023-11-19 07:34:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012696610] [2023-11-19 07:34:14,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012696610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:14,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:14,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677708914] [2023-11-19 07:34:14,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:14,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:14,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:14,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:14,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:14,846 INFO L87 Difference]: Start difference. First operand 1636 states and 2998 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-19 07:34:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:14,891 INFO L93 Difference]: Finished difference Result 1758 states and 3179 transitions. [2023-11-19 07:34:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:14,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-11-19 07:34:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:14,902 INFO L225 Difference]: With dead ends: 1758 [2023-11-19 07:34:14,902 INFO L226 Difference]: Without dead ends: 1694 [2023-11-19 07:34:14,903 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 [2023-11-19 07:34:14,904 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:14,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-11-19 07:34:14,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1692. [2023-11-19 07:34:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.8218934911242604) internal successors, (3079), 1691 states have internal predecessors, (3079), 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) [2023-11-19 07:34:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 3079 transitions. [2023-11-19 07:34:14,956 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 3079 transitions. Word has length 39 [2023-11-19 07:34:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:14,956 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 3079 transitions. [2023-11-19 07:34:14,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-19 07:34:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 3079 transitions. [2023-11-19 07:34:14,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:34:14,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:14,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:14,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:34:14,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:14,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:14,958 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2023-11-19 07:34:14,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:14,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999401234] [2023-11-19 07:34:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:14,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999401234] [2023-11-19 07:34:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999401234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:15,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:15,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169682957] [2023-11-19 07:34:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:15,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:15,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:15,014 INFO L87 Difference]: Start difference. First operand 1692 states and 3079 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-19 07:34:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:15,105 INFO L93 Difference]: Finished difference Result 1994 states and 3519 transitions. [2023-11-19 07:34:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:15,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-11-19 07:34:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:15,119 INFO L225 Difference]: With dead ends: 1994 [2023-11-19 07:34:15,119 INFO L226 Difference]: Without dead ends: 1831 [2023-11-19 07:34:15,120 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 [2023-11-19 07:34:15,122 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:15,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2023-11-19 07:34:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2023-11-19 07:34:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1827 states have (on average 1.7903667214012042) internal successors, (3271), 1828 states have internal predecessors, (3271), 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) [2023-11-19 07:34:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 3271 transitions. [2023-11-19 07:34:15,179 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 3271 transitions. Word has length 39 [2023-11-19 07:34:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:15,180 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 3271 transitions. [2023-11-19 07:34:15,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-19 07:34:15,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 3271 transitions. [2023-11-19 07:34:15,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:34:15,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:15,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:15,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:34:15,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:15,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:15,183 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2023-11-19 07:34:15,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:15,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594647620] [2023-11-19 07:34:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594647620] [2023-11-19 07:34:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594647620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:15,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:15,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764323721] [2023-11-19 07:34:15,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:15,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:15,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:15,274 INFO L87 Difference]: Start difference. First operand 1829 states and 3271 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-19 07:34:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:15,327 INFO L93 Difference]: Finished difference Result 2381 states and 4053 transitions. [2023-11-19 07:34:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:15,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-11-19 07:34:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:15,340 INFO L225 Difference]: With dead ends: 2381 [2023-11-19 07:34:15,340 INFO L226 Difference]: Without dead ends: 2081 [2023-11-19 07:34:15,342 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 [2023-11-19 07:34:15,342 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:15,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2023-11-19 07:34:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2079. [2023-11-19 07:34:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2077 states have (on average 1.7366393837265286) internal successors, (3607), 2078 states have internal predecessors, (3607), 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) [2023-11-19 07:34:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3607 transitions. [2023-11-19 07:34:15,409 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3607 transitions. Word has length 39 [2023-11-19 07:34:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:15,410 INFO L495 AbstractCegarLoop]: Abstraction has 2079 states and 3607 transitions. [2023-11-19 07:34:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-19 07:34:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3607 transitions. [2023-11-19 07:34:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:34:15,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:15,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:15,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:34:15,412 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:15,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2023-11-19 07:34:15,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:15,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981432759] [2023-11-19 07:34:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:34:15,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:15,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981432759] [2023-11-19 07:34:15,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981432759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:15,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:15,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151225385] [2023-11-19 07:34:15,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:15,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:15,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:15,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:15,574 INFO L87 Difference]: Start difference. First operand 2079 states and 3607 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2023-11-19 07:34:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:15,729 INFO L93 Difference]: Finished difference Result 3711 states and 5883 transitions. [2023-11-19 07:34:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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 54 [2023-11-19 07:34:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:15,749 INFO L225 Difference]: With dead ends: 3711 [2023-11-19 07:34:15,749 INFO L226 Difference]: Without dead ends: 3309 [2023-11-19 07:34:15,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:15,752 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 3037 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:15,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 3172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2023-11-19 07:34:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 2555. [2023-11-19 07:34:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2555 states, 2553 states have (on average 1.6698002350176264) internal successors, (4263), 2554 states have internal predecessors, (4263), 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) [2023-11-19 07:34:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 4263 transitions. [2023-11-19 07:34:15,851 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 4263 transitions. Word has length 54 [2023-11-19 07:34:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:15,851 INFO L495 AbstractCegarLoop]: Abstraction has 2555 states and 4263 transitions. [2023-11-19 07:34:15,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 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) [2023-11-19 07:34:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 4263 transitions. [2023-11-19 07:34:15,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:34:15,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:15,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:15,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:34:15,853 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:15,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2023-11-19 07:34:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:15,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574169463] [2023-11-19 07:34:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:15,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:34:15,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:15,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574169463] [2023-11-19 07:34:15,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574169463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:15,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:15,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193878769] [2023-11-19 07:34:15,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:15,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:15,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:15,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:15,967 INFO L87 Difference]: Start difference. First operand 2555 states and 4263 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-19 07:34:16,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:16,134 INFO L93 Difference]: Finished difference Result 4259 states and 6643 transitions. [2023-11-19 07:34:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2023-11-19 07:34:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:16,156 INFO L225 Difference]: With dead ends: 4259 [2023-11-19 07:34:16,156 INFO L226 Difference]: Without dead ends: 3709 [2023-11-19 07:34:16,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:16,159 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 3039 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:16,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3157 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2023-11-19 07:34:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3303. [2023-11-19 07:34:16,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3301 states have (on average 1.6028476219327477) internal successors, (5291), 3302 states have internal predecessors, (5291), 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) [2023-11-19 07:34:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 5291 transitions. [2023-11-19 07:34:16,291 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 5291 transitions. Word has length 54 [2023-11-19 07:34:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:16,292 INFO L495 AbstractCegarLoop]: Abstraction has 3303 states and 5291 transitions. [2023-11-19 07:34:16,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-19 07:34:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 5291 transitions. [2023-11-19 07:34:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:34:16,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:16,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:16,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:34:16,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:16,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2023-11-19 07:34:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270034013] [2023-11-19 07:34:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:34:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270034013] [2023-11-19 07:34:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270034013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:16,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:16,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:16,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16684553] [2023-11-19 07:34:16,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:16,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:16,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:16,398 INFO L87 Difference]: Start difference. First operand 3303 states and 5291 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-11-19 07:34:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:16,669 INFO L93 Difference]: Finished difference Result 4807 states and 7399 transitions. [2023-11-19 07:34:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:16,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 54 [2023-11-19 07:34:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:16,683 INFO L225 Difference]: With dead ends: 4807 [2023-11-19 07:34:16,683 INFO L226 Difference]: Without dead ends: 4257 [2023-11-19 07:34:16,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:16,686 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:16,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2023-11-19 07:34:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3851. [2023-11-19 07:34:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.5710574175110419) internal successors, (6047), 3850 states have internal predecessors, (6047), 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) [2023-11-19 07:34:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 6047 transitions. [2023-11-19 07:34:16,881 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 6047 transitions. Word has length 54 [2023-11-19 07:34:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 6047 transitions. [2023-11-19 07:34:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-11-19 07:34:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 6047 transitions. [2023-11-19 07:34:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 07:34:16,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:16,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:34:16,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:16,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:16,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2023-11-19 07:34:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:16,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688213615] [2023-11-19 07:34:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688213615] [2023-11-19 07:34:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688213615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479994868] [2023-11-19 07:34:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:17,009 INFO L87 Difference]: Start difference. First operand 3851 states and 6047 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-19 07:34:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:17,159 INFO L93 Difference]: Finished difference Result 6175 states and 9257 transitions. [2023-11-19 07:34:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:17,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2023-11-19 07:34:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:17,176 INFO L225 Difference]: With dead ends: 6175 [2023-11-19 07:34:17,176 INFO L226 Difference]: Without dead ends: 3853 [2023-11-19 07:34:17,180 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 [2023-11-19 07:34:17,181 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:17,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2023-11-19 07:34:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2023-11-19 07:34:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.558067030397506) internal successors, (5997), 3850 states have internal predecessors, (5997), 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) [2023-11-19 07:34:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5997 transitions. [2023-11-19 07:34:17,384 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5997 transitions. Word has length 55 [2023-11-19 07:34:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:17,384 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5997 transitions. [2023-11-19 07:34:17,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-19 07:34:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5997 transitions. [2023-11-19 07:34:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:34:17,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:17,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:17,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:34:17,387 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:17,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2023-11-19 07:34:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:17,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004311335] [2023-11-19 07:34:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:17,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:17,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:17,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004311335] [2023-11-19 07:34:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004311335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136352320] [2023-11-19 07:34:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:17,510 INFO L87 Difference]: Start difference. First operand 3851 states and 5997 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-19 07:34:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:17,596 INFO L93 Difference]: Finished difference Result 4770 states and 7257 transitions. [2023-11-19 07:34:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:17,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-19 07:34:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:17,602 INFO L225 Difference]: With dead ends: 4770 [2023-11-19 07:34:17,602 INFO L226 Difference]: Without dead ends: 2448 [2023-11-19 07:34:17,606 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 [2023-11-19 07:34:17,607 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:17,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2023-11-19 07:34:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2440. [2023-11-19 07:34:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.6702214930270713) internal successors, (4072), 2439 states have internal predecessors, (4072), 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) [2023-11-19 07:34:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 4072 transitions. [2023-11-19 07:34:17,683 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 4072 transitions. Word has length 56 [2023-11-19 07:34:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:17,684 INFO L495 AbstractCegarLoop]: Abstraction has 2440 states and 4072 transitions. [2023-11-19 07:34:17,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-19 07:34:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 4072 transitions. [2023-11-19 07:34:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:34:17,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:17,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:17,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:34:17,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:17,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2023-11-19 07:34:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:17,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131754358] [2023-11-19 07:34:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:17,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:17,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131754358] [2023-11-19 07:34:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131754358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320453303] [2023-11-19 07:34:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:17,791 INFO L87 Difference]: Start difference. First operand 2440 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2023-11-19 07:34:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:17,845 INFO L93 Difference]: Finished difference Result 2894 states and 4686 transitions. [2023-11-19 07:34:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:17,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 [2023-11-19 07:34:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:17,851 INFO L225 Difference]: With dead ends: 2894 [2023-11-19 07:34:17,851 INFO L226 Difference]: Without dead ends: 1992 [2023-11-19 07:34:17,854 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 [2023-11-19 07:34:17,855 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:17,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2023-11-19 07:34:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1990. [2023-11-19 07:34:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1988 states have (on average 1.7359154929577465) internal successors, (3451), 1989 states have internal predecessors, (3451), 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) [2023-11-19 07:34:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 3451 transitions. [2023-11-19 07:34:17,911 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 3451 transitions. Word has length 57 [2023-11-19 07:34:17,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:17,911 INFO L495 AbstractCegarLoop]: Abstraction has 1990 states and 3451 transitions. [2023-11-19 07:34:17,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2023-11-19 07:34:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 3451 transitions. [2023-11-19 07:34:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:34:17,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:17,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:17,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:34:17,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:17,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2023-11-19 07:34:17,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:17,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550797225] [2023-11-19 07:34:17,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:17,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:34:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550797225] [2023-11-19 07:34:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550797225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330394909] [2023-11-19 07:34:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:18,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:18,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:18,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:34:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:18,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:34:18,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:34:18,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:34:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330394909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:18,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:18,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-19 07:34:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685815755] [2023-11-19 07:34:18,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:18,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:34:18,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:34:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:34:18,690 INFO L87 Difference]: Start difference. First operand 1990 states and 3451 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 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) [2023-11-19 07:34:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:18,846 INFO L93 Difference]: Finished difference Result 3052 states and 4845 transitions. [2023-11-19 07:34:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 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 59 [2023-11-19 07:34:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:18,852 INFO L225 Difference]: With dead ends: 3052 [2023-11-19 07:34:18,852 INFO L226 Difference]: Without dead ends: 2600 [2023-11-19 07:34:18,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:34:18,854 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4439 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4439 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:18,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4439 Valid, 4641 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2023-11-19 07:34:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2545. [2023-11-19 07:34:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2543 states have (on average 1.624852536374361) internal successors, (4132), 2544 states have internal predecessors, (4132), 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) [2023-11-19 07:34:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4132 transitions. [2023-11-19 07:34:18,944 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4132 transitions. Word has length 59 [2023-11-19 07:34:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:18,945 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 4132 transitions. [2023-11-19 07:34:18,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 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) [2023-11-19 07:34:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4132 transitions. [2023-11-19 07:34:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:34:18,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:18,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:18,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:34:19,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:19,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2023-11-19 07:34:19,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:19,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599484406] [2023-11-19 07:34:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599484406] [2023-11-19 07:34:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599484406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747349130] [2023-11-19 07:34:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:19,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:19,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:19,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:19,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:34:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:19,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:34:19,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:20,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747349130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:21,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-19 07:34:21,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832782979] [2023-11-19 07:34:21,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:21,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 07:34:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:21,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 07:34:21,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:34:21,343 INFO L87 Difference]: Start difference. First operand 2545 states and 4132 transitions. Second operand has 25 states, 25 states have (on average 5.92) internal successors, (148), 24 states have internal predecessors, (148), 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) [2023-11-19 07:34:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:23,936 INFO L93 Difference]: Finished difference Result 6494 states and 9144 transitions. [2023-11-19 07:34:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-19 07:34:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 24 states have internal predecessors, (148), 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 60 [2023-11-19 07:34:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:23,948 INFO L225 Difference]: With dead ends: 6494 [2023-11-19 07:34:23,949 INFO L226 Difference]: Without dead ends: 5508 [2023-11-19 07:34:23,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=613, Invalid=2357, Unknown=0, NotChecked=0, Total=2970 [2023-11-19 07:34:23,954 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 23196 mSDsluCounter, 4996 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23196 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:23,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23196 Valid, 6500 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:34:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2023-11-19 07:34:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 5254. [2023-11-19 07:34:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5252 states have (on average 1.4228865194211728) internal successors, (7473), 5253 states have internal predecessors, (7473), 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) [2023-11-19 07:34:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 7473 transitions. [2023-11-19 07:34:24,270 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 7473 transitions. Word has length 60 [2023-11-19 07:34:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:24,270 INFO L495 AbstractCegarLoop]: Abstraction has 5254 states and 7473 transitions. [2023-11-19 07:34:24,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.92) internal successors, (148), 24 states have internal predecessors, (148), 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) [2023-11-19 07:34:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 7473 transitions. [2023-11-19 07:34:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:34:24,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:24,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:24,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:34:24,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:24,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash 858338323, now seen corresponding path program 1 times [2023-11-19 07:34:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:24,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275847098] [2023-11-19 07:34:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:24,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:24,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:24,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275847098] [2023-11-19 07:34:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275847098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2508518] [2023-11-19 07:34:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:24,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:24,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:24,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:34:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:25,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 07:34:25,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:26,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2508518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:29,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:34:29,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 13] total 31 [2023-11-19 07:34:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750047310] [2023-11-19 07:34:29,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:29,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-19 07:34:29,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:29,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-19 07:34:29,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-11-19 07:34:29,034 INFO L87 Difference]: Start difference. First operand 5254 states and 7473 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 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) [2023-11-19 07:34:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:34,093 INFO L93 Difference]: Finished difference Result 13790 states and 18049 transitions. [2023-11-19 07:34:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-19 07:34:34,094 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 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 60 [2023-11-19 07:34:34,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:34,116 INFO L225 Difference]: With dead ends: 13790 [2023-11-19 07:34:34,117 INFO L226 Difference]: Without dead ends: 10490 [2023-11-19 07:34:34,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2040 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1489, Invalid=5317, Unknown=0, NotChecked=0, Total=6806 [2023-11-19 07:34:34,127 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 20288 mSDsluCounter, 9549 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20288 SdHoareTripleChecker+Valid, 11064 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:34,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20288 Valid, 11064 Invalid, 1049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:34:34,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2023-11-19 07:34:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 9010. [2023-11-19 07:34:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9010 states, 9008 states have (on average 1.330373001776199) internal successors, (11984), 9009 states have internal predecessors, (11984), 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) [2023-11-19 07:34:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9010 states to 9010 states and 11984 transitions. [2023-11-19 07:34:34,732 INFO L78 Accepts]: Start accepts. Automaton has 9010 states and 11984 transitions. Word has length 60 [2023-11-19 07:34:34,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:34,733 INFO L495 AbstractCegarLoop]: Abstraction has 9010 states and 11984 transitions. [2023-11-19 07:34:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 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) [2023-11-19 07:34:34,733 INFO L276 IsEmpty]: Start isEmpty. Operand 9010 states and 11984 transitions. [2023-11-19 07:34:34,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:34:34,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:34,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:34,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:34:34,957 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:34,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash 69853425, now seen corresponding path program 1 times [2023-11-19 07:34:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416586396] [2023-11-19 07:34:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416586396] [2023-11-19 07:34:37,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416586396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:34:37,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882158442] [2023-11-19 07:34:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:37,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:34:37,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:37,344 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:34:37,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a250a4b-5a2a-4942-9fc5-7f1b5498f752/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:34:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:37,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-19 07:34:37,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:40,509 INFO L327 TraceCheckSpWp]: Computing backward predicates...