./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya --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 4f8957d243f60f3b1c8dd5ae8036bb47a7344420b54bde3f58916ec11256e152 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:06:08,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:06:08,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:06:08,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:06:08,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:06:08,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:06:08,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:06:08,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:06:08,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:06:08,690 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:06:08,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:06:08,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:06:08,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:06:08,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:06:08,693 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:06:08,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:06:08,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:06:08,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:06:08,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:06:08,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:06:08,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:06:08,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:06:08,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:06:08,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:06:08,699 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:06:08,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:06:08,700 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:06:08,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:06:08,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:06:08,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:06:08,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:06:08,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:06:08,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:06:08,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:06:08,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:06:08,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:06:08,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:06:08,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:06:08,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:06:08,706 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:06:08,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:06:08,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:06:08,706 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_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f8957d243f60f3b1c8dd5ae8036bb47a7344420b54bde3f58916ec11256e152 [2023-11-29 07:06:08,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:06:08,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:06:08,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:06:08,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:06:08,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:06:08,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i [2023-11-29 07:06:11,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:06:11,933 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:06:11,934 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i [2023-11-29 07:06:11,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data/78c48d3bf/67df281065ff408ebc958b05327ae761/FLAGe01bd00f6 [2023-11-29 07:06:11,965 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data/78c48d3bf/67df281065ff408ebc958b05327ae761 [2023-11-29 07:06:11,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:06:11,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:06:11,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:06:11,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:06:11,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:06:11,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:11" (1/1) ... [2023-11-29 07:06:11,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434e6254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:11, skipping insertion in model container [2023-11-29 07:06:11,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:11" (1/1) ... [2023-11-29 07:06:12,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:06:12,203 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_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i[916,929] [2023-11-29 07:06:12,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:06:12,463 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:06:12,477 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_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i[916,929] [2023-11-29 07:06:12,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:06:12,628 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:06:12,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12 WrapperNode [2023-11-29 07:06:12,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:06:12,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:06:12,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:06:12,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:06:12,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,786 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 871 [2023-11-29 07:06:12,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:06:12,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:06:12,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:06:12,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:06:12,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,894 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 07:06:12,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:06:12,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:06:12,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:06:12,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:06:12,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (1/1) ... [2023-11-29 07:06:12,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:06:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:13,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:06:13,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:06:13,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:06:13,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 07:06:13,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 07:06:13,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:06:13,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:06:13,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:06:13,205 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:06:13,207 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:06:14,428 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:06:14,508 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:06:14,509 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:06:14,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:14 BoogieIcfgContainer [2023-11-29 07:06:14,509 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:06:14,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:06:14,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:06:14,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:06:14,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:06:11" (1/3) ... [2023-11-29 07:06:14,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338e6c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:06:14, skipping insertion in model container [2023-11-29 07:06:14,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:12" (2/3) ... [2023-11-29 07:06:14,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338e6c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:06:14, skipping insertion in model container [2023-11-29 07:06:14,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:14" (3/3) ... [2023-11-29 07:06:14,518 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-62.i [2023-11-29 07:06:14,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:06:14,538 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:06:14,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:06:14,605 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;@4836a584, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:06:14,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:06:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 238 states have (on average 1.5756302521008403) internal successors, (375), 239 states have internal predecessors, (375), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-29 07:06:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-29 07:06:14,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:14,649 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:14,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:14,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash 420240712, now seen corresponding path program 1 times [2023-11-29 07:06:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588316877] [2023-11-29 07:06:14,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:15,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:15,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588316877] [2023-11-29 07:06:15,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 07:06:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455923646] [2023-11-29 07:06:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:15,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:15,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:15,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:15,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:06:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:15,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 07:06:15,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2023-11-29 07:06:15,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:15,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455923646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:15,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:15,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:06:15,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888891518] [2023-11-29 07:06:15,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:15,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:06:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:06:15,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:06:15,693 INFO L87 Difference]: Start difference. First operand has 327 states, 238 states have (on average 1.5756302521008403) internal successors, (375), 239 states have internal predecessors, (375), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-29 07:06:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:15,783 INFO L93 Difference]: Finished difference Result 651 states and 1178 transitions. [2023-11-29 07:06:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:06:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 571 [2023-11-29 07:06:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:15,797 INFO L225 Difference]: With dead ends: 651 [2023-11-29 07:06:15,797 INFO L226 Difference]: Without dead ends: 325 [2023-11-29 07:06:15,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:06:15,807 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:15,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 539 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-29 07:06:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-11-29 07:06:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 237 states have (on average 1.5611814345991561) internal successors, (370), 237 states have internal predecessors, (370), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-29 07:06:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 542 transitions. [2023-11-29 07:06:15,924 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 542 transitions. Word has length 571 [2023-11-29 07:06:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:15,925 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 542 transitions. [2023-11-29 07:06:15,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-29 07:06:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 542 transitions. [2023-11-29 07:06:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-29 07:06:15,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:15,941 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:15,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:16,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 07:06:16,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:16,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2082324960, now seen corresponding path program 1 times [2023-11-29 07:06:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:16,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225844779] [2023-11-29 07:06:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:16,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:16,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:16,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022208447] [2023-11-29 07:06:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:16,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:16,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:16,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:06:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:16,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:06:16,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 7200 proven. 0 refuted. 0 times theorem prover too weak. 7420 trivial. 0 not checked. [2023-11-29 07:06:17,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:17,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225844779] [2023-11-29 07:06:17,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022208447] [2023-11-29 07:06:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022208447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:17,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972183306] [2023-11-29 07:06:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:17,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:17,182 INFO L87 Difference]: Start difference. First operand 325 states and 542 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-29 07:06:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:17,278 INFO L93 Difference]: Finished difference Result 649 states and 1083 transitions. [2023-11-29 07:06:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 571 [2023-11-29 07:06:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:17,286 INFO L225 Difference]: With dead ends: 649 [2023-11-29 07:06:17,286 INFO L226 Difference]: Without dead ends: 325 [2023-11-29 07:06:17,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:17,289 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:17,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 521 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-29 07:06:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-11-29 07:06:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 237 states have (on average 1.5569620253164558) internal successors, (369), 237 states have internal predecessors, (369), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-29 07:06:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 541 transitions. [2023-11-29 07:06:17,331 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 541 transitions. Word has length 571 [2023-11-29 07:06:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:17,334 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 541 transitions. [2023-11-29 07:06:17,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-29 07:06:17,335 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 541 transitions. [2023-11-29 07:06:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-29 07:06:17,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:17,352 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:17,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:17,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:17,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:17,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:17,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1834178466, now seen corresponding path program 1 times [2023-11-29 07:06:17,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:17,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235446966] [2023-11-29 07:06:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:17,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:17,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078897301] [2023-11-29 07:06:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:17,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:17,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:06:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:18,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:06:18,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:18,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235446966] [2023-11-29 07:06:18,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:18,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078897301] [2023-11-29 07:06:18,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078897301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:18,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:18,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452911708] [2023-11-29 07:06:18,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:18,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:18,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:18,249 INFO L87 Difference]: Start difference. First operand 325 states and 541 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:18,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:18,407 INFO L93 Difference]: Finished difference Result 869 states and 1446 transitions. [2023-11-29 07:06:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:18,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 571 [2023-11-29 07:06:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:18,415 INFO L225 Difference]: With dead ends: 869 [2023-11-29 07:06:18,415 INFO L226 Difference]: Without dead ends: 545 [2023-11-29 07:06:18,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:18,418 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 335 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:18,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1113 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-11-29 07:06:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 542. [2023-11-29 07:06:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.576470588235294) internal successors, (670), 426 states have internal predecessors, (670), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 113 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 07:06:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 898 transitions. [2023-11-29 07:06:18,477 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 898 transitions. Word has length 571 [2023-11-29 07:06:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:18,479 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 898 transitions. [2023-11-29 07:06:18,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 898 transitions. [2023-11-29 07:06:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-29 07:06:18,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:18,486 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:18,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 07:06:18,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:18,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:18,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1388313442, now seen corresponding path program 1 times [2023-11-29 07:06:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:18,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816287411] [2023-11-29 07:06:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:18,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:18,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:18,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771346884] [2023-11-29 07:06:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:18,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:18,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:18,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:18,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:06:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:19,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:06:19,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:19,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816287411] [2023-11-29 07:06:19,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771346884] [2023-11-29 07:06:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771346884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700283463] [2023-11-29 07:06:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:19,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:19,258 INFO L87 Difference]: Start difference. First operand 542 states and 898 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:19,322 INFO L93 Difference]: Finished difference Result 1369 states and 2274 transitions. [2023-11-29 07:06:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:19,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 571 [2023-11-29 07:06:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:19,330 INFO L225 Difference]: With dead ends: 1369 [2023-11-29 07:06:19,330 INFO L226 Difference]: Without dead ends: 828 [2023-11-29 07:06:19,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:19,333 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 261 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:19,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1289 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-11-29 07:06:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 794. [2023-11-29 07:06:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 677 states have (on average 1.6189069423929099) internal successors, (1096), 678 states have internal predecessors, (1096), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 113 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 07:06:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1324 transitions. [2023-11-29 07:06:19,377 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1324 transitions. Word has length 571 [2023-11-29 07:06:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:19,378 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1324 transitions. [2023-11-29 07:06:19,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1324 transitions. [2023-11-29 07:06:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-29 07:06:19,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:19,384 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:19,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:19,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:19,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:19,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2067620192, now seen corresponding path program 1 times [2023-11-29 07:06:19,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:19,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181869113] [2023-11-29 07:06:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:19,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:19,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101991269] [2023-11-29 07:06:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:19,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:19,675 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:19,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:06:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:20,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:06:20,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:20,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:20,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181869113] [2023-11-29 07:06:20,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101991269] [2023-11-29 07:06:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101991269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:20,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613377837] [2023-11-29 07:06:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:20,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:20,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:20,212 INFO L87 Difference]: Start difference. First operand 794 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:20,320 INFO L93 Difference]: Finished difference Result 2372 states and 3954 transitions. [2023-11-29 07:06:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:20,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 571 [2023-11-29 07:06:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:20,335 INFO L225 Difference]: With dead ends: 2372 [2023-11-29 07:06:20,335 INFO L226 Difference]: Without dead ends: 1579 [2023-11-29 07:06:20,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:20,339 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 529 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:20,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1212 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-11-29 07:06:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1577. [2023-11-29 07:06:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1344 states have (on average 1.6086309523809523) internal successors, (2162), 1346 states have internal predecessors, (2162), 228 states have call successors, (228), 4 states have call predecessors, (228), 4 states have return successors, (228), 226 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-29 07:06:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2618 transitions. [2023-11-29 07:06:20,472 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2618 transitions. Word has length 571 [2023-11-29 07:06:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:20,474 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2618 transitions. [2023-11-29 07:06:20,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2618 transitions. [2023-11-29 07:06:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-29 07:06:20,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:20,482 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:20,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:06:20,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:20,683 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:20,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1725172192, now seen corresponding path program 1 times [2023-11-29 07:06:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:20,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544980183] [2023-11-29 07:06:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:20,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318012404] [2023-11-29 07:06:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:20,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:20,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:20,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:20,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:06:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:21,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:06:21,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:22,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:22,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:22,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544980183] [2023-11-29 07:06:22,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:22,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318012404] [2023-11-29 07:06:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318012404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:22,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:22,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83460597] [2023-11-29 07:06:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:06:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:06:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:22,862 INFO L87 Difference]: Start difference. First operand 1577 states and 2618 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:23,815 INFO L93 Difference]: Finished difference Result 5389 states and 8946 transitions. [2023-11-29 07:06:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:06:23,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 571 [2023-11-29 07:06:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:23,844 INFO L225 Difference]: With dead ends: 5389 [2023-11-29 07:06:23,844 INFO L226 Difference]: Without dead ends: 3813 [2023-11-29 07:06:23,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:06:23,850 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1154 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:23,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1761 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 07:06:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2023-11-29 07:06:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3745. [2023-11-29 07:06:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 3193 states have (on average 1.5956780457250235) internal successors, (5095), 3197 states have internal predecessors, (5095), 542 states have call successors, (542), 9 states have call predecessors, (542), 9 states have return successors, (542), 538 states have call predecessors, (542), 542 states have call successors, (542) [2023-11-29 07:06:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 6179 transitions. [2023-11-29 07:06:24,265 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 6179 transitions. Word has length 571 [2023-11-29 07:06:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:24,266 INFO L495 AbstractCegarLoop]: Abstraction has 3745 states and 6179 transitions. [2023-11-29 07:06:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 6179 transitions. [2023-11-29 07:06:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-11-29 07:06:24,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:24,272 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:24,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:06:24,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 07:06:24,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:24,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:24,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1382127828, now seen corresponding path program 1 times [2023-11-29 07:06:24,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:24,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027386241] [2023-11-29 07:06:24,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:24,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:24,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:24,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077306118] [2023-11-29 07:06:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:24,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:24,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:24,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:24,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:06:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:24,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:06:24,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:24,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027386241] [2023-11-29 07:06:24,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:24,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077306118] [2023-11-29 07:06:24,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077306118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:24,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:24,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146978397] [2023-11-29 07:06:24,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:24,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:24,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:24,992 INFO L87 Difference]: Start difference. First operand 3745 states and 6179 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:25,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:25,183 INFO L93 Difference]: Finished difference Result 9185 states and 15079 transitions. [2023-11-29 07:06:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 572 [2023-11-29 07:06:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:25,214 INFO L225 Difference]: With dead ends: 9185 [2023-11-29 07:06:25,214 INFO L226 Difference]: Without dead ends: 5855 [2023-11-29 07:06:25,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:25,221 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 234 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:25,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1237 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2023-11-29 07:06:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5845. [2023-11-29 07:06:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5077 states have (on average 1.5873547370494387) internal successors, (8059), 5089 states have internal predecessors, (8059), 750 states have call successors, (750), 17 states have call predecessors, (750), 17 states have return successors, (750), 738 states have call predecessors, (750), 750 states have call successors, (750) [2023-11-29 07:06:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 9559 transitions. [2023-11-29 07:06:25,553 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 9559 transitions. Word has length 572 [2023-11-29 07:06:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:25,554 INFO L495 AbstractCegarLoop]: Abstraction has 5845 states and 9559 transitions. [2023-11-29 07:06:25,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 9559 transitions. [2023-11-29 07:06:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-11-29 07:06:25,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:25,561 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:25,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:06:25,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 07:06:25,762 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:25,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1541032170, now seen corresponding path program 1 times [2023-11-29 07:06:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:25,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627534808] [2023-11-29 07:06:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:25,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:25,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194668656] [2023-11-29 07:06:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:25,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:25,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:25,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:25,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:06:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:26,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:06:26,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:26,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:26,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627534808] [2023-11-29 07:06:26,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194668656] [2023-11-29 07:06:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194668656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278476666] [2023-11-29 07:06:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:26,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:26,389 INFO L87 Difference]: Start difference. First operand 5845 states and 9559 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:27,106 INFO L93 Difference]: Finished difference Result 15997 states and 26135 transitions. [2023-11-29 07:06:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:06:27,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 572 [2023-11-29 07:06:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:27,172 INFO L225 Difference]: With dead ends: 15997 [2023-11-29 07:06:27,172 INFO L226 Difference]: Without dead ends: 10487 [2023-11-29 07:06:27,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:27,188 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 1366 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:27,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 2419 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10487 states. [2023-11-29 07:06:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10487 to 10447. [2023-11-29 07:06:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10447 states, 9055 states have (on average 1.5831032578685809) internal successors, (14335), 9083 states have internal predecessors, (14335), 1358 states have call successors, (1358), 33 states have call predecessors, (1358), 33 states have return successors, (1358), 1330 states have call predecessors, (1358), 1358 states have call successors, (1358) [2023-11-29 07:06:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10447 states to 10447 states and 17051 transitions. [2023-11-29 07:06:27,885 INFO L78 Accepts]: Start accepts. Automaton has 10447 states and 17051 transitions. Word has length 572 [2023-11-29 07:06:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:27,886 INFO L495 AbstractCegarLoop]: Abstraction has 10447 states and 17051 transitions. [2023-11-29 07:06:27,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 10447 states and 17051 transitions. [2023-11-29 07:06:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2023-11-29 07:06:27,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:27,895 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:27,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:06:28,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:28,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:28,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:28,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1581706920, now seen corresponding path program 1 times [2023-11-29 07:06:28,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:28,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373427856] [2023-11-29 07:06:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:28,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:28,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288397237] [2023-11-29 07:06:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:28,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:28,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:28,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:28,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:06:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:28,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:06:28,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6273 proven. 177 refuted. 0 times theorem prover too weak. 8170 trivial. 0 not checked. [2023-11-29 07:06:29,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 78 proven. 177 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373427856] [2023-11-29 07:06:29,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288397237] [2023-11-29 07:06:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288397237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:29,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:29,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:06:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788426229] [2023-11-29 07:06:29,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:06:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:06:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:06:29,765 INFO L87 Difference]: Start difference. First operand 10447 states and 17051 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-11-29 07:06:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:30,687 INFO L93 Difference]: Finished difference Result 16509 states and 26846 transitions. [2023-11-29 07:06:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:06:30,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 572 [2023-11-29 07:06:30,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:30,710 INFO L225 Difference]: With dead ends: 16509 [2023-11-29 07:06:30,711 INFO L226 Difference]: Without dead ends: 6583 [2023-11-29 07:06:30,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1136 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:06:30,730 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 309 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:30,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1314 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 07:06:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2023-11-29 07:06:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6531. [2023-11-29 07:06:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 5538 states have (on average 1.567172264355363) internal successors, (8679), 5550 states have internal predecessors, (8679), 942 states have call successors, (942), 50 states have call predecessors, (942), 50 states have return successors, (942), 930 states have call predecessors, (942), 942 states have call successors, (942) [2023-11-29 07:06:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 10563 transitions. [2023-11-29 07:06:31,180 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 10563 transitions. Word has length 572 [2023-11-29 07:06:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:31,181 INFO L495 AbstractCegarLoop]: Abstraction has 6531 states and 10563 transitions. [2023-11-29 07:06:31,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-11-29 07:06:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 10563 transitions. [2023-11-29 07:06:31,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2023-11-29 07:06:31,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:31,188 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:31,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:31,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:31,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:31,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2141769963, now seen corresponding path program 1 times [2023-11-29 07:06:31,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:31,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216451606] [2023-11-29 07:06:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:31,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:31,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:31,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520211362] [2023-11-29 07:06:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:31,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:31,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:31,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:06:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:31,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:06:31,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 6525 proven. 171 refuted. 0 times theorem prover too weak. 7924 trivial. 0 not checked. [2023-11-29 07:06:32,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 84 proven. 171 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:32,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216451606] [2023-11-29 07:06:32,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520211362] [2023-11-29 07:06:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520211362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:32,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:32,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:06:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802905731] [2023-11-29 07:06:32,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:32,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:06:32,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:32,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:06:32,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:06:32,541 INFO L87 Difference]: Start difference. First operand 6531 states and 10563 transitions. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-11-29 07:06:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:33,082 INFO L93 Difference]: Finished difference Result 9829 states and 15887 transitions. [2023-11-29 07:06:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 07:06:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) Word has length 573 [2023-11-29 07:06:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:33,092 INFO L225 Difference]: With dead ends: 9829 [2023-11-29 07:06:33,092 INFO L226 Difference]: Without dead ends: 3781 [2023-11-29 07:06:33,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1138 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:06:33,101 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 673 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:33,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1097 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2023-11-29 07:06:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3745. [2023-11-29 07:06:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 2991 states have (on average 1.5215646940822467) internal successors, (4551), 2995 states have internal predecessors, (4551), 718 states have call successors, (718), 35 states have call predecessors, (718), 35 states have return successors, (718), 714 states have call predecessors, (718), 718 states have call successors, (718) [2023-11-29 07:06:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 5987 transitions. [2023-11-29 07:06:33,395 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 5987 transitions. Word has length 573 [2023-11-29 07:06:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:33,396 INFO L495 AbstractCegarLoop]: Abstraction has 3745 states and 5987 transitions. [2023-11-29 07:06:33,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2023-11-29 07:06:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 5987 transitions. [2023-11-29 07:06:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-11-29 07:06:33,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:33,402 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:33,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 07:06:33,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:33,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1851701686, now seen corresponding path program 1 times [2023-11-29 07:06:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500395478] [2023-11-29 07:06:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:33,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499028886] [2023-11-29 07:06:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:33,682 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:33,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:06:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:34,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:06:34,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 3973 proven. 39 refuted. 0 times theorem prover too weak. 10608 trivial. 0 not checked. [2023-11-29 07:06:34,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:34,486 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 216 proven. 39 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:34,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:34,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500395478] [2023-11-29 07:06:34,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:34,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499028886] [2023-11-29 07:06:34,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499028886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:34,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:34,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:06:34,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776130047] [2023-11-29 07:06:34,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:34,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:06:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:34,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:06:34,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:06:34,490 INFO L87 Difference]: Start difference. First operand 3745 states and 5987 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-11-29 07:06:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:35,417 INFO L93 Difference]: Finished difference Result 4705 states and 7493 transitions. [2023-11-29 07:06:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:06:35,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) Word has length 576 [2023-11-29 07:06:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:35,422 INFO L225 Difference]: With dead ends: 4705 [2023-11-29 07:06:35,422 INFO L226 Difference]: Without dead ends: 1264 [2023-11-29 07:06:35,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1144 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:06:35,431 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 682 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:35,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1347 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 07:06:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-11-29 07:06:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1246. [2023-11-29 07:06:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 971 states have (on average 1.4933058702368691) internal successors, (1450), 971 states have internal predecessors, (1450), 258 states have call successors, (258), 16 states have call predecessors, (258), 16 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2023-11-29 07:06:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1966 transitions. [2023-11-29 07:06:35,541 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1966 transitions. Word has length 576 [2023-11-29 07:06:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:35,542 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1966 transitions. [2023-11-29 07:06:35,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 2 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 2 states have call predecessors, (100), 2 states have call successors, (100) [2023-11-29 07:06:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1966 transitions. [2023-11-29 07:06:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2023-11-29 07:06:35,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:35,548 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:35,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 07:06:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:35,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:35,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash -474241532, now seen corresponding path program 1 times [2023-11-29 07:06:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012515449] [2023-11-29 07:06:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:35,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:35,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009107027] [2023-11-29 07:06:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:35,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:35,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:35,816 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:35,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:06:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:36,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 07:06:36,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:37,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:37,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012515449] [2023-11-29 07:06:37,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009107027] [2023-11-29 07:06:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009107027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:37,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:37,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:37,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711826371] [2023-11-29 07:06:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:37,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:06:37,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:06:37,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:37,804 INFO L87 Difference]: Start difference. First operand 1246 states and 1966 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:38,200 INFO L93 Difference]: Finished difference Result 3322 states and 5245 transitions. [2023-11-29 07:06:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 577 [2023-11-29 07:06:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:38,207 INFO L225 Difference]: With dead ends: 3322 [2023-11-29 07:06:38,207 INFO L226 Difference]: Without dead ends: 2255 [2023-11-29 07:06:38,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:06:38,209 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 730 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:38,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1196 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:06:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2023-11-29 07:06:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2253. [2023-11-29 07:06:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 1794 states have (on average 1.4983277591973243) internal successors, (2688), 1794 states have internal predecessors, (2688), 430 states have call successors, (430), 28 states have call predecessors, (430), 28 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2023-11-29 07:06:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3548 transitions. [2023-11-29 07:06:38,369 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3548 transitions. Word has length 577 [2023-11-29 07:06:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:38,369 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 3548 transitions. [2023-11-29 07:06:38,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3548 transitions. [2023-11-29 07:06:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2023-11-29 07:06:38,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:38,373 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:38,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:06:38,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:38,574 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:38,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1983868266, now seen corresponding path program 1 times [2023-11-29 07:06:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156551425] [2023-11-29 07:06:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:38,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:38,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872867298] [2023-11-29 07:06:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:38,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:38,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:38,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:38,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:06:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:39,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:06:39,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 4945 proven. 201 refuted. 0 times theorem prover too weak. 9474 trivial. 0 not checked. [2023-11-29 07:06:39,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 54 proven. 201 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156551425] [2023-11-29 07:06:39,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872867298] [2023-11-29 07:06:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872867298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:39,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:06:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388470760] [2023-11-29 07:06:39,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:39,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:06:39,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:06:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:06:39,860 INFO L87 Difference]: Start difference. First operand 2253 states and 3548 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-29 07:06:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:40,373 INFO L93 Difference]: Finished difference Result 4377 states and 6857 transitions. [2023-11-29 07:06:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:06:40,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 578 [2023-11-29 07:06:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:40,380 INFO L225 Difference]: With dead ends: 4377 [2023-11-29 07:06:40,381 INFO L226 Difference]: Without dead ends: 2313 [2023-11-29 07:06:40,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1148 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:06:40,386 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 594 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:40,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1094 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2023-11-29 07:06:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2273. [2023-11-29 07:06:40,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1809 states have (on average 1.4836926478717523) internal successors, (2684), 1809 states have internal predecessors, (2684), 430 states have call successors, (430), 33 states have call predecessors, (430), 33 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2023-11-29 07:06:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3544 transitions. [2023-11-29 07:06:40,613 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3544 transitions. Word has length 578 [2023-11-29 07:06:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:40,614 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 3544 transitions. [2023-11-29 07:06:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-29 07:06:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3544 transitions. [2023-11-29 07:06:40,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2023-11-29 07:06:40,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:40,620 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:40,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 07:06:40,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 07:06:40,821 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:40,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:40,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1276316582, now seen corresponding path program 1 times [2023-11-29 07:06:40,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:40,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981710507] [2023-11-29 07:06:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:40,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:40,895 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:40,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987779631] [2023-11-29 07:06:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:40,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:40,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:40,897 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:40,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:06:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:41,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:06:41,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 5325 proven. 195 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2023-11-29 07:06:41,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 60 proven. 195 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:42,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981710507] [2023-11-29 07:06:42,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987779631] [2023-11-29 07:06:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987779631] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:42,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:06:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417884611] [2023-11-29 07:06:42,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:06:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:06:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:06:42,208 INFO L87 Difference]: Start difference. First operand 2273 states and 3544 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-29 07:06:42,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:42,818 INFO L93 Difference]: Finished difference Result 4408 states and 6830 transitions. [2023-11-29 07:06:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:06:42,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 579 [2023-11-29 07:06:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:42,825 INFO L225 Difference]: With dead ends: 4408 [2023-11-29 07:06:42,825 INFO L226 Difference]: Without dead ends: 2334 [2023-11-29 07:06:42,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1150 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:06:42,831 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 854 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:42,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1076 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2023-11-29 07:06:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 2284. [2023-11-29 07:06:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1815 states have (on average 1.4617079889807163) internal successors, (2653), 1815 states have internal predecessors, (2653), 430 states have call successors, (430), 38 states have call predecessors, (430), 38 states have return successors, (430), 430 states have call predecessors, (430), 430 states have call successors, (430) [2023-11-29 07:06:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3513 transitions. [2023-11-29 07:06:42,986 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3513 transitions. Word has length 579 [2023-11-29 07:06:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:42,987 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3513 transitions. [2023-11-29 07:06:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-29 07:06:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3513 transitions. [2023-11-29 07:06:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-29 07:06:42,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:42,991 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:42,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:06:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 07:06:43,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:43,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash -324685526, now seen corresponding path program 1 times [2023-11-29 07:06:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580756210] [2023-11-29 07:06:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:43,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:43,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087950938] [2023-11-29 07:06:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:43,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:43,263 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:43,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:06:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:43,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:06:43,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:06:43,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:43,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580756210] [2023-11-29 07:06:43,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087950938] [2023-11-29 07:06:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087950938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:43,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:43,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571871166] [2023-11-29 07:06:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:43,884 INFO L87 Difference]: Start difference. First operand 2284 states and 3513 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:44,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:44,320 INFO L93 Difference]: Finished difference Result 6210 states and 9551 transitions. [2023-11-29 07:06:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:06:44,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 580 [2023-11-29 07:06:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:44,333 INFO L225 Difference]: With dead ends: 6210 [2023-11-29 07:06:44,333 INFO L226 Difference]: Without dead ends: 4254 [2023-11-29 07:06:44,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:44,338 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 534 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:44,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2272 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:44,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2023-11-29 07:06:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 4252. [2023-11-29 07:06:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 3407 states have (on average 1.4628705606105077) internal successors, (4984), 3407 states have internal predecessors, (4984), 774 states have call successors, (774), 70 states have call predecessors, (774), 70 states have return successors, (774), 774 states have call predecessors, (774), 774 states have call successors, (774) [2023-11-29 07:06:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 6532 transitions. [2023-11-29 07:06:44,709 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 6532 transitions. Word has length 580 [2023-11-29 07:06:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:44,710 INFO L495 AbstractCegarLoop]: Abstraction has 4252 states and 6532 transitions. [2023-11-29 07:06:44,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:06:44,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 6532 transitions. [2023-11-29 07:06:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-29 07:06:44,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:44,717 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:44,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 07:06:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 07:06:44,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:44,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1345753880, now seen corresponding path program 1 times [2023-11-29 07:06:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:44,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335096710] [2023-11-29 07:06:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:44,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765823064] [2023-11-29 07:06:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:44,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:44,980 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:44,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 07:06:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:45,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 07:06:45,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 1075 proven. 246 refuted. 0 times theorem prover too weak. 13299 trivial. 0 not checked. [2023-11-29 07:06:46,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9 proven. 246 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:46,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:46,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335096710] [2023-11-29 07:06:46,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:46,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765823064] [2023-11-29 07:06:46,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765823064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:46,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:46,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2023-11-29 07:06:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700926136] [2023-11-29 07:06:46,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:46,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:06:46,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:06:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:06:46,589 INFO L87 Difference]: Start difference. First operand 4252 states and 6532 transitions. Second operand has 12 states, 12 states have (on average 23.916666666666668) internal successors, (287), 12 states have internal predecessors, (287), 3 states have call successors, (168), 2 states have call predecessors, (168), 4 states have return successors, (169), 3 states have call predecessors, (169), 3 states have call successors, (169) [2023-11-29 07:06:48,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 07:06:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:48,762 INFO L93 Difference]: Finished difference Result 8328 states and 12716 transitions. [2023-11-29 07:06:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:06:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 23.916666666666668) internal successors, (287), 12 states have internal predecessors, (287), 3 states have call successors, (168), 2 states have call predecessors, (168), 4 states have return successors, (169), 3 states have call predecessors, (169), 3 states have call successors, (169) Word has length 580 [2023-11-29 07:06:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:48,772 INFO L225 Difference]: With dead ends: 8328 [2023-11-29 07:06:48,772 INFO L226 Difference]: Without dead ends: 4378 [2023-11-29 07:06:48,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1148 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:06:48,778 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 253 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:48,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 2638 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 07:06:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2023-11-29 07:06:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 4288. [2023-11-29 07:06:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 3434 states have (on average 1.4539895165987187) internal successors, (4993), 3434 states have internal predecessors, (4993), 774 states have call successors, (774), 79 states have call predecessors, (774), 79 states have return successors, (774), 774 states have call predecessors, (774), 774 states have call successors, (774) [2023-11-29 07:06:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 6541 transitions. [2023-11-29 07:06:49,125 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 6541 transitions. Word has length 580 [2023-11-29 07:06:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:49,126 INFO L495 AbstractCegarLoop]: Abstraction has 4288 states and 6541 transitions. [2023-11-29 07:06:49,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.916666666666668) internal successors, (287), 12 states have internal predecessors, (287), 3 states have call successors, (168), 2 states have call predecessors, (168), 4 states have return successors, (169), 3 states have call predecessors, (169), 3 states have call successors, (169) [2023-11-29 07:06:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 6541 transitions. [2023-11-29 07:06:49,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-29 07:06:49,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:49,130 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:49,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 07:06:49,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:06:49,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:49,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1283714266, now seen corresponding path program 1 times [2023-11-29 07:06:49,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:49,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327268997] [2023-11-29 07:06:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:49,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:49,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:49,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212390078] [2023-11-29 07:06:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:49,400 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:49,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 07:06:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:49,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 07:06:49,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 8901 proven. 393 refuted. 0 times theorem prover too weak. 5326 trivial. 0 not checked. [2023-11-29 07:06:52,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 132 proven. 123 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:06:53,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:53,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327268997] [2023-11-29 07:06:53,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:53,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212390078] [2023-11-29 07:06:53,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212390078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:53,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:53,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-11-29 07:06:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894081745] [2023-11-29 07:06:53,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:53,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 07:06:53,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 07:06:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-11-29 07:06:53,455 INFO L87 Difference]: Start difference. First operand 4288 states and 6541 transitions. Second operand has 26 states, 26 states have (on average 10.961538461538462) internal successors, (285), 26 states have internal predecessors, (285), 9 states have call successors, (140), 5 states have call predecessors, (140), 9 states have return successors, (140), 9 states have call predecessors, (140), 9 states have call successors, (140) [2023-11-29 07:06:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:57,164 INFO L93 Difference]: Finished difference Result 12993 states and 19360 transitions. [2023-11-29 07:06:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 07:06:57,165 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.961538461538462) internal successors, (285), 26 states have internal predecessors, (285), 9 states have call successors, (140), 5 states have call predecessors, (140), 9 states have return successors, (140), 9 states have call predecessors, (140), 9 states have call successors, (140) Word has length 580 [2023-11-29 07:06:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:57,178 INFO L225 Difference]: With dead ends: 12993 [2023-11-29 07:06:57,178 INFO L226 Difference]: Without dead ends: 9064 [2023-11-29 07:06:57,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1198 GetRequests, 1140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=894, Invalid=2646, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 07:06:57,186 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 3910 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 1236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3982 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1236 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:57,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3982 Valid, 3435 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1236 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 07:06:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2023-11-29 07:06:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 6037. [2023-11-29 07:06:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 4802 states have (on average 1.421491045397751) internal successors, (6826), 4810 states have internal predecessors, (6826), 1062 states have call successors, (1062), 172 states have call predecessors, (1062), 172 states have return successors, (1062), 1054 states have call predecessors, (1062), 1062 states have call successors, (1062) [2023-11-29 07:06:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 8950 transitions. [2023-11-29 07:06:57,781 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 8950 transitions. Word has length 580 [2023-11-29 07:06:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:57,781 INFO L495 AbstractCegarLoop]: Abstraction has 6037 states and 8950 transitions. [2023-11-29 07:06:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.961538461538462) internal successors, (285), 26 states have internal predecessors, (285), 9 states have call successors, (140), 5 states have call predecessors, (140), 9 states have return successors, (140), 9 states have call predecessors, (140), 9 states have call successors, (140) [2023-11-29 07:06:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 8950 transitions. [2023-11-29 07:06:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-29 07:06:57,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:57,786 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:57,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 07:06:57,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 07:06:57,987 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:57,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1082980328, now seen corresponding path program 1 times [2023-11-29 07:06:57,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:57,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937013623] [2023-11-29 07:06:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:58,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961197559] [2023-11-29 07:06:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:58,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:58,049 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:58,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 07:06:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:58,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 07:06:58,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 5673 proven. 189 refuted. 0 times theorem prover too weak. 8758 trivial. 0 not checked. [2023-11-29 07:06:59,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:07:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 66 proven. 189 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:07:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:07:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937013623] [2023-11-29 07:07:00,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:07:00,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961197559] [2023-11-29 07:07:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961197559] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:07:00,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:07:00,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 07:07:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630895799] [2023-11-29 07:07:00,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:07:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 07:07:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:07:00,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 07:07:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:07:00,432 INFO L87 Difference]: Start difference. First operand 6037 states and 8950 transitions. Second operand has 16 states, 16 states have (on average 15.625) internal successors, (250), 16 states have internal predecessors, (250), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-29 07:07:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:07:05,000 INFO L93 Difference]: Finished difference Result 24571 states and 36433 transitions. [2023-11-29 07:07:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 07:07:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 16 states have internal predecessors, (250), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 580 [2023-11-29 07:07:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:07:05,024 INFO L225 Difference]: With dead ends: 24571 [2023-11-29 07:07:05,024 INFO L226 Difference]: Without dead ends: 18765 [2023-11-29 07:07:05,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1151 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=598, Invalid=1382, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 07:07:05,032 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 5561 mSDsluCounter, 5612 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 1693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5586 SdHoareTripleChecker+Valid, 6007 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1693 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:07:05,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5586 Valid, 6007 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1693 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 07:07:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18765 states. [2023-11-29 07:07:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18765 to 11459. [2023-11-29 07:07:05,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11459 states, 9646 states have (on average 1.4480613725896745) internal successors, (13968), 9678 states have internal predecessors, (13968), 1542 states have call successors, (1542), 270 states have call predecessors, (1542), 270 states have return successors, (1542), 1510 states have call predecessors, (1542), 1542 states have call successors, (1542) [2023-11-29 07:07:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11459 states to 11459 states and 17052 transitions. [2023-11-29 07:07:06,014 INFO L78 Accepts]: Start accepts. Automaton has 11459 states and 17052 transitions. Word has length 580 [2023-11-29 07:07:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:07:06,015 INFO L495 AbstractCegarLoop]: Abstraction has 11459 states and 17052 transitions. [2023-11-29 07:07:06,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 16 states have internal predecessors, (250), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-29 07:07:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 11459 states and 17052 transitions. [2023-11-29 07:07:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2023-11-29 07:07:06,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:07:06,021 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:06,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 07:07:06,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 07:07:06,222 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:07:06,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash 76072744, now seen corresponding path program 1 times [2023-11-29 07:07:06,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:06,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642615844] [2023-11-29 07:07:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:06,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:06,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:07:06,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711260619] [2023-11-29 07:07:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:06,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:06,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:07:06,274 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:07:06,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 07:07:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:07:06,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:07:06,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:07:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2023-11-29 07:07:07,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:07:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:07:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642615844] [2023-11-29 07:07:07,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:07:07,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711260619] [2023-11-29 07:07:07,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711260619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:07:07,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:07:07,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:07:07,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930717169] [2023-11-29 07:07:07,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:07:07,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:07:07,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:07:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:07:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:07:07,287 INFO L87 Difference]: Start difference. First operand 11459 states and 17052 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:07:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:07:08,330 INFO L93 Difference]: Finished difference Result 22831 states and 33991 transitions. [2023-11-29 07:07:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:07:08,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 580 [2023-11-29 07:07:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:07:08,347 INFO L225 Difference]: With dead ends: 22831 [2023-11-29 07:07:08,347 INFO L226 Difference]: Without dead ends: 11589 [2023-11-29 07:07:08,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:07:08,357 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 365 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:07:08,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1467 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:07:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11589 states. [2023-11-29 07:07:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11589 to 11459. [2023-11-29 07:07:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11459 states, 9646 states have (on average 1.4471283433547584) internal successors, (13959), 9678 states have internal predecessors, (13959), 1542 states have call successors, (1542), 270 states have call predecessors, (1542), 270 states have return successors, (1542), 1510 states have call predecessors, (1542), 1542 states have call successors, (1542) [2023-11-29 07:07:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11459 states to 11459 states and 17043 transitions. [2023-11-29 07:07:09,349 INFO L78 Accepts]: Start accepts. Automaton has 11459 states and 17043 transitions. Word has length 580 [2023-11-29 07:07:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:07:09,349 INFO L495 AbstractCegarLoop]: Abstraction has 11459 states and 17043 transitions. [2023-11-29 07:07:09,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2023-11-29 07:07:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11459 states and 17043 transitions. [2023-11-29 07:07:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2023-11-29 07:07:09,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:07:09,354 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:09,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 07:07:09,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:09,555 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:07:09,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash 619962735, now seen corresponding path program 1 times [2023-11-29 07:07:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711473803] [2023-11-29 07:07:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:09,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:09,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:07:09,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75690522] [2023-11-29 07:07:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:09,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:07:09,625 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:07:09,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 07:07:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:07:10,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 07:07:10,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:07:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 1695 proven. 240 refuted. 0 times theorem prover too weak. 12685 trivial. 0 not checked. [2023-11-29 07:07:11,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:07:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 15 proven. 240 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2023-11-29 07:07:11,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:07:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711473803] [2023-11-29 07:07:11,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:07:11,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75690522] [2023-11-29 07:07:11,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75690522] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:07:11,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:07:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 07:07:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751312617] [2023-11-29 07:07:11,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:07:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:07:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:07:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:07:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:07:11,965 INFO L87 Difference]: Start difference. First operand 11459 states and 17043 transitions. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-29 07:07:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:07:14,425 INFO L93 Difference]: Finished difference Result 23117 states and 34250 transitions. [2023-11-29 07:07:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:07:14,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 581 [2023-11-29 07:07:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:07:14,441 INFO L225 Difference]: With dead ends: 23117 [2023-11-29 07:07:14,441 INFO L226 Difference]: Without dead ends: 11862 [2023-11-29 07:07:14,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1179 GetRequests, 1152 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2023-11-29 07:07:14,456 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1847 mSDsluCounter, 1954 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:07:14,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 2342 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:07:14,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2023-11-29 07:07:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 11838. [2023-11-29 07:07:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11838 states, 9936 states have (on average 1.4378019323671498) internal successors, (14286), 9976 states have internal predecessors, (14286), 1582 states have call successors, (1582), 319 states have call predecessors, (1582), 319 states have return successors, (1582), 1542 states have call predecessors, (1582), 1582 states have call successors, (1582) [2023-11-29 07:07:15,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 17450 transitions. [2023-11-29 07:07:15,447 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 17450 transitions. Word has length 581 [2023-11-29 07:07:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:07:15,448 INFO L495 AbstractCegarLoop]: Abstraction has 11838 states and 17450 transitions. [2023-11-29 07:07:15,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 4 states have call successors, (172), 3 states have call predecessors, (172), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2023-11-29 07:07:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 17450 transitions. [2023-11-29 07:07:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-11-29 07:07:15,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:07:15,455 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:15,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 07:07:15,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:15,656 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:07:15,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash -997112124, now seen corresponding path program 1 times [2023-11-29 07:07:15,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:15,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804749388] [2023-11-29 07:07:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:15,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:07:15,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143361165] [2023-11-29 07:07:15,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:15,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:07:15,715 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:07:15,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 07:07:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:07:16,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 07:07:16,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:07:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 10000 proven. 270 refuted. 0 times theorem prover too weak. 4350 trivial. 0 not checked. [2023-11-29 07:07:20,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:07:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:07:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804749388] [2023-11-29 07:07:22,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:07:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143361165] [2023-11-29 07:07:22,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143361165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:07:22,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:07:22,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 07:07:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19611903] [2023-11-29 07:07:22,300 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 07:07:22,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 07:07:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:07:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 07:07:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2023-11-29 07:07:22,302 INFO L87 Difference]: Start difference. First operand 11838 states and 17450 transitions. Second operand has 17 states, 17 states have (on average 10.352941176470589) internal successors, (176), 17 states have internal predecessors, (176), 5 states have call successors, (86), 5 states have call predecessors, (86), 8 states have return successors, (86), 5 states have call predecessors, (86), 5 states have call successors, (86) [2023-11-29 07:07:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:07:30,416 INFO L93 Difference]: Finished difference Result 31354 states and 46061 transitions. [2023-11-29 07:07:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 07:07:30,417 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.352941176470589) internal successors, (176), 17 states have internal predecessors, (176), 5 states have call successors, (86), 5 states have call predecessors, (86), 8 states have return successors, (86), 5 states have call predecessors, (86), 5 states have call successors, (86) Word has length 582 [2023-11-29 07:07:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:07:30,449 INFO L225 Difference]: With dead ends: 31354 [2023-11-29 07:07:30,449 INFO L226 Difference]: Without dead ends: 20194 [2023-11-29 07:07:30,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 07:07:30,464 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 2077 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 3672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:07:30,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 3237 Invalid, 3672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 3274 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 07:07:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20194 states. [2023-11-29 07:07:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20194 to 8171. [2023-11-29 07:07:31,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8171 states, 6901 states have (on average 1.43703811041878) internal successors, (9917), 6917 states have internal predecessors, (9917), 1034 states have call successors, (1034), 235 states have call predecessors, (1034), 235 states have return successors, (1034), 1018 states have call predecessors, (1034), 1034 states have call successors, (1034) [2023-11-29 07:07:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 11985 transitions. [2023-11-29 07:07:31,596 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 11985 transitions. Word has length 582 [2023-11-29 07:07:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:07:31,597 INFO L495 AbstractCegarLoop]: Abstraction has 8171 states and 11985 transitions. [2023-11-29 07:07:31,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.352941176470589) internal successors, (176), 17 states have internal predecessors, (176), 5 states have call successors, (86), 5 states have call predecessors, (86), 8 states have return successors, (86), 5 states have call predecessors, (86), 5 states have call successors, (86) [2023-11-29 07:07:31,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 11985 transitions. [2023-11-29 07:07:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-11-29 07:07:31,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:07:31,601 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:31,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 07:07:31,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 07:07:31,802 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:07:31,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:31,803 INFO L85 PathProgramCache]: Analyzing trace with hash 541227906, now seen corresponding path program 1 times [2023-11-29 07:07:31,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:31,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737130113] [2023-11-29 07:07:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:31,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:31,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:07:31,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264177538] [2023-11-29 07:07:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:31,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:31,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:07:31,859 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:07:31,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 07:07:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:07:32,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 07:07:32,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:07:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9149 proven. 336 refuted. 0 times theorem prover too weak. 5135 trivial. 0 not checked. [2023-11-29 07:07:45,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:07:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:07:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737130113] [2023-11-29 07:07:46,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:07:46,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264177538] [2023-11-29 07:07:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264177538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:07:46,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:07:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 07:07:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636116485] [2023-11-29 07:07:46,987 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 07:07:46,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:07:46,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:07:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:07:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:07:46,989 INFO L87 Difference]: Start difference. First operand 8171 states and 11985 transitions. Second operand has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 4 states have call successors, (86), 4 states have call predecessors, (86), 7 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-11-29 07:07:53,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:07:59,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:03,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 07:08:09,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:15,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:20,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:26,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 07:08:31,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:36,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 07:08:37,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:38,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:43,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:47,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 07:08:51,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:55,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:08:59,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:04,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:09,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:13,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:21,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:26,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:30,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:34,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:39,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:43,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:47,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:51,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:52,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:09:56,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:00,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:05,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:09,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:13,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:17,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:21,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:26,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:30,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:34,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:38,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:43,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:47,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:51,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:55,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:10:59,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:03,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:07,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:10,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:14,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:18,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:22,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:26,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:30,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:34,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:43,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:47,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:51,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:11:56,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:00,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:04,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:08,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:13,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:17,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:21,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:25,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:29,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:33,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:38,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:43,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:47,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:51,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:12:55,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:00,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:04,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:08,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:10,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:14,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:18,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:22,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:26,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:30,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:34,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:38,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:42,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:47,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:51,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:55,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:13:59,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:03,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:05,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:10,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:14,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:23,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:27,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:35,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:50,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:14:54,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:03,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:07,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:11,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:15,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:19,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:23,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:27,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:32,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:36,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:40,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:44,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:48,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:52,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:15:57,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:16:05,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:16:16,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:16:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:16:18,726 INFO L93 Difference]: Finished difference Result 16215 states and 23711 transitions. [2023-11-29 07:16:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 07:16:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 4 states have call successors, (86), 4 states have call predecessors, (86), 7 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) Word has length 582 [2023-11-29 07:16:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:16:18,736 INFO L225 Difference]: With dead ends: 16215 [2023-11-29 07:16:18,736 INFO L226 Difference]: Without dead ends: 8423 [2023-11-29 07:16:18,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=341, Invalid=1299, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 07:16:18,742 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1140 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 260 mSolverCounterUnsat, 104 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 450.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 104 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 458.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:16:18,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 2941 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2248 Invalid, 104 Unknown, 0 Unchecked, 458.4s Time] [2023-11-29 07:16:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8423 states. [2023-11-29 07:16:21,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8423 to 7320. [2023-11-29 07:16:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7320 states, 6033 states have (on average 1.4145532902370297) internal successors, (8534), 6049 states have internal predecessors, (8534), 1034 states have call successors, (1034), 252 states have call predecessors, (1034), 252 states have return successors, (1034), 1018 states have call predecessors, (1034), 1034 states have call successors, (1034) [2023-11-29 07:16:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 10602 transitions. [2023-11-29 07:16:21,156 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 10602 transitions. Word has length 582 [2023-11-29 07:16:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:16:21,157 INFO L495 AbstractCegarLoop]: Abstraction has 7320 states and 10602 transitions. [2023-11-29 07:16:21,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 4 states have call successors, (86), 4 states have call predecessors, (86), 7 states have return successors, (86), 4 states have call predecessors, (86), 4 states have call successors, (86) [2023-11-29 07:16:21,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 10602 transitions. [2023-11-29 07:16:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-11-29 07:16:21,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:16:21,161 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:16:21,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 07:16:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 07:16:21,362 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:16:21,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:16:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -340685447, now seen corresponding path program 1 times [2023-11-29 07:16:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:16:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667264557] [2023-11-29 07:16:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:16:21,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:16:21,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738313699] [2023-11-29 07:16:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:21,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:21,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:16:21,421 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:16:21,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 07:16:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:22,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 07:16:22,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:16:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9264 proven. 513 refuted. 0 times theorem prover too weak. 4843 trivial. 0 not checked. [2023-11-29 07:16:28,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:16:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 354 proven. 153 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2023-11-29 07:16:30,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:16:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667264557] [2023-11-29 07:16:30,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:16:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738313699] [2023-11-29 07:16:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738313699] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:16:30,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:16:30,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2023-11-29 07:16:30,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541114874] [2023-11-29 07:16:30,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:16:30,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:16:30,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:16:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:16:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:16:30,562 INFO L87 Difference]: Start difference. First operand 7320 states and 10602 transitions. Second operand has 28 states, 28 states have (on average 10.107142857142858) internal successors, (283), 27 states have internal predecessors, (283), 8 states have call successors, (132), 6 states have call predecessors, (132), 12 states have return successors, (133), 8 states have call predecessors, (133), 8 states have call successors, (133) [2023-11-29 07:16:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:16:53,101 INFO L93 Difference]: Finished difference Result 33835 states and 49030 transitions. [2023-11-29 07:16:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-11-29 07:16:53,102 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.107142857142858) internal successors, (283), 27 states have internal predecessors, (283), 8 states have call successors, (132), 6 states have call predecessors, (132), 12 states have return successors, (133), 8 states have call predecessors, (133), 8 states have call successors, (133) Word has length 583 [2023-11-29 07:16:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:16:53,134 INFO L225 Difference]: With dead ends: 33835 [2023-11-29 07:16:53,135 INFO L226 Difference]: Without dead ends: 26845 [2023-11-29 07:16:53,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 1147 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2445, Invalid=7857, Unknown=0, NotChecked=0, Total=10302 [2023-11-29 07:16:53,147 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 3320 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 3977 SdHoareTripleChecker+Invalid, 4704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:16:53,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3358 Valid, 3977 Invalid, 4704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1143 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 07:16:53,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26845 states. [2023-11-29 07:16:55,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26845 to 12265. [2023-11-29 07:16:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12265 states, 10969 states have (on average 1.4674993162549002) internal successors, (16097), 10985 states have internal predecessors, (16097), 1034 states have call successors, (1034), 261 states have call predecessors, (1034), 261 states have return successors, (1034), 1018 states have call predecessors, (1034), 1034 states have call successors, (1034) [2023-11-29 07:16:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12265 states to 12265 states and 18165 transitions. [2023-11-29 07:16:55,951 INFO L78 Accepts]: Start accepts. Automaton has 12265 states and 18165 transitions. Word has length 583 [2023-11-29 07:16:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:16:55,952 INFO L495 AbstractCegarLoop]: Abstraction has 12265 states and 18165 transitions. [2023-11-29 07:16:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.107142857142858) internal successors, (283), 27 states have internal predecessors, (283), 8 states have call successors, (132), 6 states have call predecessors, (132), 12 states have return successors, (133), 8 states have call predecessors, (133), 8 states have call successors, (133) [2023-11-29 07:16:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 12265 states and 18165 transitions. [2023-11-29 07:16:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-11-29 07:16:55,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:16:55,959 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:16:55,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 07:16:56,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 07:16:56,160 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:16:56,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:16:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 103215227, now seen corresponding path program 1 times [2023-11-29 07:16:56,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:16:56,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094446158] [2023-11-29 07:16:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:56,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:16:56,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:16:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981223322] [2023-11-29 07:16:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:16:56,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:16:56,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:16:56,221 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:16:56,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 07:16:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:16:56,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 07:16:56,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:17:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 8682 proven. 498 refuted. 0 times theorem prover too weak. 5440 trivial. 0 not checked. [2023-11-29 07:17:01,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:17:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 276 proven. 231 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2023-11-29 07:17:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:17:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094446158] [2023-11-29 07:17:03,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:17:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981223322] [2023-11-29 07:17:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981223322] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:17:03,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:17:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2023-11-29 07:17:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025892479] [2023-11-29 07:17:03,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:17:03,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 07:17:03,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:17:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 07:17:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-11-29 07:17:03,192 INFO L87 Difference]: Start difference. First operand 12265 states and 18165 transitions. Second operand has 22 states, 21 states have (on average 13.238095238095237) internal successors, (278), 20 states have internal predecessors, (278), 7 states have call successors, (135), 5 states have call predecessors, (135), 10 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) [2023-11-29 07:17:16,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:17:16,720 INFO L93 Difference]: Finished difference Result 30385 states and 44509 transitions. [2023-11-29 07:17:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 07:17:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 13.238095238095237) internal successors, (278), 20 states have internal predecessors, (278), 7 states have call successors, (135), 5 states have call predecessors, (135), 10 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) Word has length 583 [2023-11-29 07:17:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:17:16,742 INFO L225 Difference]: With dead ends: 30385 [2023-11-29 07:17:16,742 INFO L226 Difference]: Without dead ends: 18537 [2023-11-29 07:17:16,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1148 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1081, Invalid=3475, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 07:17:16,751 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 893 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 3460 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 3460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:17:16,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 4062 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 3460 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 07:17:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18537 states. [2023-11-29 07:17:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18537 to 8734. [2023-11-29 07:17:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8734 states, 7420 states have (on average 1.413611859838275) internal successors, (10489), 7436 states have internal predecessors, (10489), 1034 states have call successors, (1034), 279 states have call predecessors, (1034), 279 states have return successors, (1034), 1018 states have call predecessors, (1034), 1034 states have call successors, (1034) [2023-11-29 07:17:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8734 states to 8734 states and 12557 transitions. [2023-11-29 07:17:19,654 INFO L78 Accepts]: Start accepts. Automaton has 8734 states and 12557 transitions. Word has length 583 [2023-11-29 07:17:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:17:19,654 INFO L495 AbstractCegarLoop]: Abstraction has 8734 states and 12557 transitions. [2023-11-29 07:17:19,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 13.238095238095237) internal successors, (278), 20 states have internal predecessors, (278), 7 states have call successors, (135), 5 states have call predecessors, (135), 10 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) [2023-11-29 07:17:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8734 states and 12557 transitions. [2023-11-29 07:17:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2023-11-29 07:17:19,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:17:19,658 INFO L195 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:17:19,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 07:17:19,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 07:17:19,859 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:17:19,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:17:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash -633802241, now seen corresponding path program 1 times [2023-11-29 07:17:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:17:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747594053] [2023-11-29 07:17:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:17:19,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:17:19,916 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:17:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158702673] [2023-11-29 07:17:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:17:19,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:17:19,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:17:19,918 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:17:19,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 07:17:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:17:20,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 07:17:20,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:17:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9149 proven. 336 refuted. 0 times theorem prover too weak. 5135 trivial. 0 not checked. [2023-11-29 07:17:53,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:17:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 411 proven. 345 refuted. 0 times theorem prover too weak. 13864 trivial. 0 not checked. [2023-11-29 07:17:59,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:17:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747594053] [2023-11-29 07:17:59,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:17:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158702673] [2023-11-29 07:17:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158702673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:17:59,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:17:59,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-29 07:17:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887262952] [2023-11-29 07:17:59,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:17:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:17:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:17:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:17:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=614, Unknown=2, NotChecked=0, Total=756 [2023-11-29 07:17:59,834 INFO L87 Difference]: Start difference. First operand 8734 states and 12557 transitions. Second operand has 28 states, 28 states have (on average 10.0) internal successors, (280), 28 states have internal predecessors, (280), 7 states have call successors, (132), 4 states have call predecessors, (132), 10 states have return successors, (133), 7 states have call predecessors, (133), 7 states have call successors, (133) [2023-11-29 07:18:31,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:18:42,181 WARN L293 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 302 DAG size of output: 287 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:18:46,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:18:47,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:18:51,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:18:54,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:18:59,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:03,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 07:19:06,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:10,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:15,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:19,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 07:19:29,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:34,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:36,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:41,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:19:46,678 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 07:19:46,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-11-29 07:19:46,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1142 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=918, Invalid=3238, Unknown=4, NotChecked=0, Total=4160 [2023-11-29 07:19:46,681 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2007 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 734 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:19:46,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 2293 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2110 Invalid, 11 Unknown, 0 Unchecked, 67.7s Time] [2023-11-29 07:19:46,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 07:19:46,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:19:46,882 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2023-11-29 07:19:46,884 INFO L158 Benchmark]: Toolchain (without parser) took 814915.60ms. Allocated memory was 132.1MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 85.5MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 549.6MB. Max. memory is 16.1GB. [2023-11-29 07:19:46,884 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:19:46,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.42ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 85.2MB in the beginning and 119.5MB in the end (delta: -34.3MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-11-29 07:19:46,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 157.10ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 95.8MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-29 07:19:46,885 INFO L158 Benchmark]: Boogie Preprocessor took 203.40ms. Allocated memory is still 165.7MB. Free memory was 95.8MB in the beginning and 92.0MB in the end (delta: 3.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2023-11-29 07:19:46,885 INFO L158 Benchmark]: RCFGBuilder took 1518.26ms. Allocated memory was 165.7MB in the beginning and 207.6MB in the end (delta: 41.9MB). Free memory was 91.1MB in the beginning and 112.3MB in the end (delta: -21.2MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2023-11-29 07:19:46,885 INFO L158 Benchmark]: TraceAbstraction took 812371.98ms. Allocated memory was 207.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 111.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 498.1MB. Max. memory is 16.1GB. [2023-11-29 07:19:46,886 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 658.42ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 85.2MB in the beginning and 119.5MB in the end (delta: -34.3MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 157.10ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 95.8MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 203.40ms. Allocated memory is still 165.7MB. Free memory was 95.8MB in the beginning and 92.0MB in the end (delta: 3.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * RCFGBuilder took 1518.26ms. Allocated memory was 165.7MB in the beginning and 207.6MB in the end (delta: 41.9MB). Free memory was 91.1MB in the beginning and 112.3MB in the end (delta: -21.2MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * TraceAbstraction took 812371.98ms. Allocated memory was 207.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 111.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 498.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya --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 4f8957d243f60f3b1c8dd5ae8036bb47a7344420b54bde3f58916ec11256e152 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:19:48,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:19:48,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 07:19:48,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:19:48,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:19:48,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:19:48,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:19:48,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:19:48,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:19:48,753 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:19:48,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:19:48,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:19:48,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:19:48,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:19:48,756 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:19:48,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:19:48,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:19:48,758 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:19:48,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:19:48,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:19:48,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:19:48,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:19:48,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:19:48,761 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 07:19:48,762 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 07:19:48,762 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 07:19:48,763 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:19:48,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:19:48,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:19:48,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:19:48,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:19:48,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:19:48,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:19:48,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:19:48,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:19:48,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:19:48,767 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:19:48,767 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 07:19:48,767 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 07:19:48,767 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:19:48,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:19:48,768 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:19:48,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:19:48,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:19:48,768 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 07:19:48,768 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_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f8957d243f60f3b1c8dd5ae8036bb47a7344420b54bde3f58916ec11256e152 [2023-11-29 07:19:49,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:19:49,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:19:49,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:19:49,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:19:49,091 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:19:49,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i [2023-11-29 07:19:51,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:19:52,289 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:19:52,290 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i [2023-11-29 07:19:52,314 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data/77d0ab430/375a69c597a3466696973b416f14eb64/FLAG2c97fcfb8 [2023-11-29 07:19:52,336 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/data/77d0ab430/375a69c597a3466696973b416f14eb64 [2023-11-29 07:19:52,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:19:52,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:19:52,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:19:52,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:19:52,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:19:52,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:19:52" (1/1) ... [2023-11-29 07:19:52,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59716313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:52, skipping insertion in model container [2023-11-29 07:19:52,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:19:52" (1/1) ... [2023-11-29 07:19:52,439 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:19:52,606 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_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i[916,929] [2023-11-29 07:19:52,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:19:52,898 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:19:52,909 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_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-62.i[916,929] [2023-11-29 07:19:53,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:19:53,071 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:19:53,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53 WrapperNode [2023-11-29 07:19:53,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:19:53,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:19:53,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:19:53,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:19:53,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,190 INFO L138 Inliner]: procedures = 27, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 651 [2023-11-29 07:19:53,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:19:53,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:19:53,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:19:53,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:19:53,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,258 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 07:19:53,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:19:53,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:19:53,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:19:53,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:19:53,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53" (1/1) ... [2023-11-29 07:19:53,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:19:53,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:19:53,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:19:53,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33efafe4-3a7b-4ba8-8b81-e18db2f6c83b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:19:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:19:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 07:19:53,437 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 07:19:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 07:19:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:19:53,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:19:53,624 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:19:53,627 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation