./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.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_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme --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 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:19,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:19,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:19,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:19,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:19,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:19,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:19,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:19,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:19,463 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:19,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:19,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:19,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:19,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:19,467 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:19,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:19,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:19,468 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:19,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:19,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:19,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:19,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:19,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:19,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:19,472 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:19,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:19,473 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:19,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:19,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:19,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:19,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:19,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:19,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:19,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:19,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:19,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:19,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:19,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:19,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:19,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:19,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:19,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:19,480 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_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c05b3481ca1dc1c692f840aeed292bcc36fc4d3f2b591c1dabda29806aee6c8 [2023-11-26 10:44:19,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:19,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:19,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:19,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:19,837 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:19,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2023-11-26 10:44:22,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:23,235 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:23,236 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2023-11-26 10:44:23,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/data/1c9e3c90f/bb6cf77c59b9496ca56eb6c1be2e1294/FLAG9978b1150 [2023-11-26 10:44:23,274 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/data/1c9e3c90f/bb6cf77c59b9496ca56eb6c1be2e1294 [2023-11-26 10:44:23,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:23,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:23,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:23,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:23,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:23,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae71d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23, skipping insertion in model container [2023-11-26 10:44:23,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:23,485 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_49d9d150-2996-426a-b859-27d0e59a92cf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2023-11-26 10:44:23,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:23,611 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:23,627 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_49d9d150-2996-426a-b859-27d0e59a92cf/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-61.i[916,929] [2023-11-26 10:44:23,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:23,706 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:23,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23 WrapperNode [2023-11-26 10:44:23,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:23,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:23,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:23,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:23,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,802 INFO L138 Inliner]: procedures = 26, calls = 82, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 397 [2023-11-26 10:44:23,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:23,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:23,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:23,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:23,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,840 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]. [2023-11-26 10:44:23,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,862 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:23,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:23,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:23,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:23,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (1/1) ... [2023-11-26 10:44:23,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:23,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:23,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:23,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:23,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:23,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:44:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:44:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:23,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:24,135 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:24,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:24,919 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:25,005 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:25,006 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:44:25,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:25 BoogieIcfgContainer [2023-11-26 10:44:25,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:25,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:25,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:25,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:25,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:23" (1/3) ... [2023-11-26 10:44:25,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391f50f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:25, skipping insertion in model container [2023-11-26 10:44:25,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:23" (2/3) ... [2023-11-26 10:44:25,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391f50f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:25, skipping insertion in model container [2023-11-26 10:44:25,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:25" (3/3) ... [2023-11-26 10:44:25,022 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-61.i [2023-11-26 10:44:25,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:25,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:25,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:25,130 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;@5f50671f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:25,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 100 states have (on average 1.49) internal successors, (149), 101 states have internal predecessors, (149), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-26 10:44:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:25,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:25,178 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:25,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:25,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 607467284, now seen corresponding path program 1 times [2023-11-26 10:44:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435214353] [2023-11-26 10:44:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:25,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435214353] [2023-11-26 10:44:25,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 10:44:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298816557] [2023-11-26 10:44:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:25,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:25,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:25,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:25,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:25,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 10:44:26,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2023-11-26 10:44:26,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:26,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298816557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:26,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:26,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:26,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399307147] [2023-11-26 10:44:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:26,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:26,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:26,186 INFO L87 Difference]: Start difference. First operand has 172 states, 100 states have (on average 1.49) internal successors, (149), 101 states have internal predecessors, (149), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-11-26 10:44:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:26,281 INFO L93 Difference]: Finished difference Result 341 states and 641 transitions. [2023-11-26 10:44:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:26,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) Word has length 417 [2023-11-26 10:44:26,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:26,294 INFO L225 Difference]: With dead ends: 341 [2023-11-26 10:44:26,294 INFO L226 Difference]: Without dead ends: 170 [2023-11-26 10:44:26,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:26,304 INFO L413 NwaCegarLoop]: 277 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, 277 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 [2023-11-26 10:44:26,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-26 10:44:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-26 10:44:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.4343434343434343) internal successors, (142), 99 states have internal predecessors, (142), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-26 10:44:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 280 transitions. [2023-11-26 10:44:26,378 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 280 transitions. Word has length 417 [2023-11-26 10:44:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:26,378 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 280 transitions. [2023-11-26 10:44:26,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (69), 2 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 2 states have call successors, (69) [2023-11-26 10:44:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 280 transitions. [2023-11-26 10:44:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:26,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:26,392 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:26,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:26,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-26 10:44:26,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:26,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash 689516438, now seen corresponding path program 1 times [2023-11-26 10:44:26,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:26,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452448573] [2023-11-26 10:44:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:26,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476574389] [2023-11-26 10:44:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:26,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:26,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:26,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:26,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:44:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:27,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:44:27,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-26 10:44:27,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452448573] [2023-11-26 10:44:27,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476574389] [2023-11-26 10:44:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476574389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:27,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:27,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184640922] [2023-11-26 10:44:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:27,141 INFO L87 Difference]: Start difference. First operand 170 states and 280 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:27,230 INFO L93 Difference]: Finished difference Result 339 states and 559 transitions. [2023-11-26 10:44:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:27,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 417 [2023-11-26 10:44:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:27,240 INFO L225 Difference]: With dead ends: 339 [2023-11-26 10:44:27,243 INFO L226 Difference]: Without dead ends: 170 [2023-11-26 10:44:27,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:27,248 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 31 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:27,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 517 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-26 10:44:27,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-26 10:44:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 99 states have internal predecessors, (141), 69 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-26 10:44:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 279 transitions. [2023-11-26 10:44:27,301 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 279 transitions. Word has length 417 [2023-11-26 10:44:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:27,306 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 279 transitions. [2023-11-26 10:44:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 279 transitions. [2023-11-26 10:44:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:27,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:27,312 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:27,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:27,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:27,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:27,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1304628268, now seen corresponding path program 1 times [2023-11-26 10:44:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:27,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888210490] [2023-11-26 10:44:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:27,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:27,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182953310] [2023-11-26 10:44:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:27,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:27,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:27,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:27,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:27,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:44:27,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4578 proven. 81 refuted. 0 times theorem prover too weak. 4725 trivial. 0 not checked. [2023-11-26 10:44:28,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 123 proven. 81 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-11-26 10:44:28,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:28,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888210490] [2023-11-26 10:44:28,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182953310] [2023-11-26 10:44:28,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182953310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:28,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:28,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-26 10:44:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483405385] [2023-11-26 10:44:28,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:28,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:44:28,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:28,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:44:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:28,702 INFO L87 Difference]: Start difference. First operand 170 states and 279 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-26 10:44:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:29,319 INFO L93 Difference]: Finished difference Result 347 states and 564 transitions. [2023-11-26 10:44:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:44:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 417 [2023-11-26 10:44:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:29,326 INFO L225 Difference]: With dead ends: 347 [2023-11-26 10:44:29,327 INFO L226 Difference]: Without dead ends: 178 [2023-11-26 10:44:29,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 826 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:29,329 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 269 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:29,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 461 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:44:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-26 10:44:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2023-11-26 10:44:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 102 states have (on average 1.392156862745098) internal successors, (142), 102 states have internal predecessors, (142), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-26 10:44:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 280 transitions. [2023-11-26 10:44:29,369 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 280 transitions. Word has length 417 [2023-11-26 10:44:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:29,370 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 280 transitions. [2023-11-26 10:44:29,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2023-11-26 10:44:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 280 transitions. [2023-11-26 10:44:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:29,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:29,375 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:29,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:29,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:29,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1242588654, now seen corresponding path program 1 times [2023-11-26 10:44:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:29,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99760953] [2023-11-26 10:44:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:29,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721511865] [2023-11-26 10:44:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:29,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:29,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:29,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:29,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:44:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:29,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:44:29,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 4454 proven. 75 refuted. 0 times theorem prover too weak. 4855 trivial. 0 not checked. [2023-11-26 10:44:31,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 129 proven. 75 refuted. 0 times theorem prover too weak. 9180 trivial. 0 not checked. [2023-11-26 10:44:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99760953] [2023-11-26 10:44:31,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721511865] [2023-11-26 10:44:31,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721511865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:31,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:31,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-26 10:44:31,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729812200] [2023-11-26 10:44:31,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:31,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:44:31,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:31,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:44:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:44:31,775 INFO L87 Difference]: Start difference. First operand 174 states and 280 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-11-26 10:44:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:33,179 INFO L93 Difference]: Finished difference Result 757 states and 1204 transitions. [2023-11-26 10:44:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:44:33,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) Word has length 417 [2023-11-26 10:44:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:33,186 INFO L225 Difference]: With dead ends: 757 [2023-11-26 10:44:33,187 INFO L226 Difference]: Without dead ends: 584 [2023-11-26 10:44:33,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:33,189 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 674 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:33,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 886 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:44:33,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-26 10:44:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 458. [2023-11-26 10:44:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 269 states have (on average 1.3680297397769516) internal successors, (368), 270 states have internal predecessors, (368), 181 states have call successors, (181), 7 states have call predecessors, (181), 7 states have return successors, (181), 180 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-26 10:44:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 730 transitions. [2023-11-26 10:44:33,344 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 730 transitions. Word has length 417 [2023-11-26 10:44:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:33,346 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 730 transitions. [2023-11-26 10:44:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 4 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2023-11-26 10:44:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 730 transitions. [2023-11-26 10:44:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:33,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:33,351 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:33,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:33,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:33,559 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:33,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1023733936, now seen corresponding path program 1 times [2023-11-26 10:44:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:33,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388944830] [2023-11-26 10:44:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:33,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:33,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531915253] [2023-11-26 10:44:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:33,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:33,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:33,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:33,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:44:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:33,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-26 10:44:33,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3562 proven. 129 refuted. 0 times theorem prover too weak. 5693 trivial. 0 not checked. [2023-11-26 10:44:36,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:42,800 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (mod c_~var_1_37~0 4294967296))) (let ((.cse0 (mod c_~var_1_53~0 4294967296)) (.cse7 (* (- 1) .cse8))) (let ((.cse2 (+ (* (div (+ .cse0 (- 4294967233) .cse7) 4294967296) 4294967296) 8589934592 .cse8)) (.cse4 (mod (+ c_~var_1_53~0 63 (* c_~var_1_37~0 4294967295)) 4294967296))) (and (forall ((v_y_4 Int) (v_y_6 Int) (v_z_6 Int)) (let ((.cse1 (* v_y_6 4294967296)) (.cse3 (+ (* 4294967295 v_z_6) (* v_y_4 4294967296) (* 18446744069414584320 v_y_6)))) (or (< (+ .cse0 .cse1 v_z_6) 4294967296) (< .cse2 (+ .cse0 v_z_6)) (< 4294967295 (+ .cse1 v_z_6)) (< .cse3 63) (< 127 .cse3) (< (+ v_z_6 .cse4) 4294967296)))) (forall ((v_z_14 Int) (v_y_4 Int) (v_y_14 Int)) (let ((.cse5 (* v_y_14 4294967296)) (.cse6 (+ (* v_z_14 4294967295) (* v_y_4 4294967296) (* 18446744069414584320 v_y_14)))) (or (< 4294967295 (+ .cse0 v_z_14 .cse5)) (< (+ v_z_14 .cse5) 0) (< 127 .cse6) (< .cse6 63) (< (+ (* (div (+ .cse0 63 .cse7) 4294967296) 4294967296) 4294967296 .cse8) (+ .cse0 v_z_14)) (< (+ v_z_14 .cse4) 4294967296)))) (forall ((v_y_4 Int) (v_z_13 Int) (v_y_13 Int) (v_y_8 Int)) (let ((.cse9 (* v_y_13 4294967296))) (let ((.cse10 (+ (* v_y_8 4294967296) v_z_13 .cse9)) (.cse11 (+ (* 18446744069414584320 v_y_13) (* v_y_4 4294967296) (* 18446744069414584320 v_y_8) (* v_z_13 4294967295)))) (or (< .cse2 (+ .cse0 v_z_13 .cse9)) (< .cse10 0) (< 4294967295 .cse10) (< 4294967295 v_z_13) (< v_z_13 0) (< (+ v_z_13 .cse4 .cse9) 4294967296) (< 127 .cse11) (< .cse11 63))))))))) is different from false [2023-11-26 10:44:43,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388944830] [2023-11-26 10:44:43,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531915253] [2023-11-26 10:44:43,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531915253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:43,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:44:43,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-26 10:44:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933059951] [2023-11-26 10:44:43,305 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:43,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 10:44:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:43,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 10:44:43,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=499, Unknown=1, NotChecked=50, Total=756 [2023-11-26 10:44:43,308 INFO L87 Difference]: Start difference. First operand 458 states and 730 transitions. Second operand has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 15 states have internal predecessors, (96), 7 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (69), 5 states have call predecessors, (69), 7 states have call successors, (69) [2023-11-26 10:44:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:44,593 INFO L93 Difference]: Finished difference Result 1428 states and 2234 transitions. [2023-11-26 10:44:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 10:44:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 15 states have internal predecessors, (96), 7 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (69), 5 states have call predecessors, (69), 7 states have call successors, (69) Word has length 417 [2023-11-26 10:44:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:44,604 INFO L225 Difference]: With dead ends: 1428 [2023-11-26 10:44:44,604 INFO L226 Difference]: Without dead ends: 971 [2023-11-26 10:44:44,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=405, Invalid=858, Unknown=1, NotChecked=68, Total=1332 [2023-11-26 10:44:44,608 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 387 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:44,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 968 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:44:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-11-26 10:44:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 953. [2023-11-26 10:44:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 566 states have (on average 1.3462897526501767) internal successors, (762), 568 states have internal predecessors, (762), 362 states have call successors, (362), 24 states have call predecessors, (362), 24 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-26 10:44:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1486 transitions. [2023-11-26 10:44:44,861 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1486 transitions. Word has length 417 [2023-11-26 10:44:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:44,863 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1486 transitions. [2023-11-26 10:44:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 15 states have internal predecessors, (96), 7 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (69), 5 states have call predecessors, (69), 7 states have call successors, (69) [2023-11-26 10:44:44,863 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1486 transitions. [2023-11-26 10:44:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:44,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:44,869 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:44,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:45,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:45,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:45,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash -883185326, now seen corresponding path program 1 times [2023-11-26 10:44:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:45,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246893918] [2023-11-26 10:44:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:45,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:45,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695579591] [2023-11-26 10:44:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:45,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:45,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:45,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:45,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:44:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:45,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:44:45,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-26 10:44:46,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:46,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246893918] [2023-11-26 10:44:46,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695579591] [2023-11-26 10:44:46,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695579591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:46,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997179706] [2023-11-26 10:44:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:46,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:46,133 INFO L87 Difference]: Start difference. First operand 953 states and 1486 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:46,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:46,911 INFO L93 Difference]: Finished difference Result 2851 states and 4444 transitions. [2023-11-26 10:44:46,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:46,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 417 [2023-11-26 10:44:46,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:46,928 INFO L225 Difference]: With dead ends: 2851 [2023-11-26 10:44:46,928 INFO L226 Difference]: Without dead ends: 1899 [2023-11-26 10:44:46,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:46,933 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 215 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:46,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 775 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:44:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2023-11-26 10:44:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1091. [2023-11-26 10:44:47,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 704 states have (on average 1.3806818181818181) internal successors, (972), 706 states have internal predecessors, (972), 362 states have call successors, (362), 24 states have call predecessors, (362), 24 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-26 10:44:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1696 transitions. [2023-11-26 10:44:47,311 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1696 transitions. Word has length 417 [2023-11-26 10:44:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:47,312 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1696 transitions. [2023-11-26 10:44:47,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1696 transitions. [2023-11-26 10:44:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-26 10:44:47,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:47,318 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:47,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:47,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 10:44:47,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:47,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:47,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1904253680, now seen corresponding path program 1 times [2023-11-26 10:44:47,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:47,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804950654] [2023-11-26 10:44:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:47,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735359101] [2023-11-26 10:44:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:47,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:47,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:47,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:47,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:44:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:47,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:44:47,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-26 10:44:47,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:47,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:47,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804950654] [2023-11-26 10:44:47,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:47,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735359101] [2023-11-26 10:44:47,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735359101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:47,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:47,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:44:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24671716] [2023-11-26 10:44:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:47,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:47,962 INFO L87 Difference]: Start difference. First operand 1091 states and 1696 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:48,471 INFO L93 Difference]: Finished difference Result 2989 states and 4630 transitions. [2023-11-26 10:44:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 417 [2023-11-26 10:44:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:48,491 INFO L225 Difference]: With dead ends: 2989 [2023-11-26 10:44:48,491 INFO L226 Difference]: Without dead ends: 1899 [2023-11-26 10:44:48,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:48,498 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 283 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:48,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 784 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2023-11-26 10:44:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1091. [2023-11-26 10:44:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 704 states have (on average 1.3721590909090908) internal successors, (966), 706 states have internal predecessors, (966), 362 states have call successors, (362), 24 states have call predecessors, (362), 24 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-26 10:44:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1690 transitions. [2023-11-26 10:44:48,911 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1690 transitions. Word has length 417 [2023-11-26 10:44:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:48,912 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1690 transitions. [2023-11-26 10:44:48,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1690 transitions. [2023-11-26 10:44:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-11-26 10:44:48,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:48,917 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:48,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:49,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:49,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:49,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash -578795797, now seen corresponding path program 1 times [2023-11-26 10:44:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:49,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985461416] [2023-11-26 10:44:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:49,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:49,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:49,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864604699] [2023-11-26 10:44:49,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:49,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:49,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:49,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:49,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:44:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:44:49,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2023-11-26 10:44:50,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985461416] [2023-11-26 10:44:50,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:50,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864604699] [2023-11-26 10:44:50,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864604699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:50,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809971169] [2023-11-26 10:44:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:50,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:44:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:44:50,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:50,185 INFO L87 Difference]: Start difference. First operand 1091 states and 1690 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:50,685 INFO L93 Difference]: Finished difference Result 2181 states and 3379 transitions. [2023-11-26 10:44:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:44:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) Word has length 419 [2023-11-26 10:44:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:50,695 INFO L225 Difference]: With dead ends: 2181 [2023-11-26 10:44:50,695 INFO L226 Difference]: Without dead ends: 1091 [2023-11-26 10:44:50,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:44:50,701 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 77 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:50,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 374 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:44:50,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2023-11-26 10:44:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2023-11-26 10:44:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 704 states have (on average 1.3551136363636365) internal successors, (954), 706 states have internal predecessors, (954), 362 states have call successors, (362), 24 states have call predecessors, (362), 24 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2023-11-26 10:44:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1678 transitions. [2023-11-26 10:44:51,027 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1678 transitions. Word has length 419 [2023-11-26 10:44:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:51,028 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1678 transitions. [2023-11-26 10:44:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (69), 1 states have call predecessors, (69), 1 states have return successors, (69), 1 states have call predecessors, (69), 1 states have call successors, (69) [2023-11-26 10:44:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1678 transitions. [2023-11-26 10:44:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-11-26 10:44:51,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:51,034 INFO L195 NwaCegarLoop]: trace histogram [69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:51,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 10:44:51,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:51,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1599864151, now seen corresponding path program 1 times [2023-11-26 10:44:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727034217] [2023-11-26 10:44:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:51,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:51,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735561179] [2023-11-26 10:44:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:51,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:51,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:51,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d9d150-2996-426a-b859-27d0e59a92cf/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:44:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 10:44:51,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 3623 proven. 300 refuted. 0 times theorem prover too weak. 5461 trivial. 0 not checked. [2023-11-26 10:44:58,215 INFO L327 TraceCheckSpWp]: Computing backward predicates...