./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/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_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/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_2982183b-28b1-4773-adcd-8ffa31b6b420/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 4e26c4f9f4bd36e827f5cc020962f05d0934fda94760f725a49c7754f36caf1f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:48,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:48,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:05:48,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:48,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:48,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:48,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:48,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:48,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:48,484 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:48,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:48,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:48,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:48,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:48,489 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:48,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:48,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:05:48,490 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:05:48,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:48,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:05:48,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:48,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:05:48,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:48,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:05:48,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:05:48,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:05:48,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:48,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:48,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:48,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:48,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:48,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:48,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:48,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:48,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:05:48,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:48,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:48,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:48,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:48,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:05:48,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:48,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:48,511 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_2982183b-28b1-4773-adcd-8ffa31b6b420/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e26c4f9f4bd36e827f5cc020962f05d0934fda94760f725a49c7754f36caf1f [2023-11-26 12:05:48,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:48,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:48,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:48,870 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:48,871 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:48,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-26 12:05:52,121 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:52,441 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:52,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-26 12:05:52,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/data/15c524acc/3c1961a3a57b48aaa76ab67af790da47/FLAG04b507102 [2023-11-26 12:05:52,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/data/15c524acc/3c1961a3a57b48aaa76ab67af790da47 [2023-11-26 12:05:52,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:52,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:52,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:52,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:52,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:52,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:52" (1/1) ... [2023-11-26 12:05:52,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129385ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:52, skipping insertion in model container [2023-11-26 12:05:52,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:52" (1/1) ... [2023-11-26 12:05:52,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:52,739 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_2982183b-28b1-4773-adcd-8ffa31b6b420/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i[916,929] [2023-11-26 12:05:53,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:53,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:53,059 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_2982183b-28b1-4773-adcd-8ffa31b6b420/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-21.i[916,929] [2023-11-26 12:05:53,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:53,214 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:53,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53 WrapperNode [2023-11-26 12:05:53,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:53,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:53,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:53,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:53,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,388 INFO L138 Inliner]: procedures = 26, calls = 117, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2023-11-26 12:05:53,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:53,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:53,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:53,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:53,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,553 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 12:05:53,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:53,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:53,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:53,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:53,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (1/1) ... [2023-11-26 12:05:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:53,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:53,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:05:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:05:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:05:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:05:53,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:53,921 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:53,923 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:55,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:55,390 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:55,390 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:05:55,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:55 BoogieIcfgContainer [2023-11-26 12:05:55,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:55,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:55,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:55,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:55,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:52" (1/3) ... [2023-11-26 12:05:55,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5f4a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:55, skipping insertion in model container [2023-11-26 12:05:55,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:53" (2/3) ... [2023-11-26 12:05:55,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5f4a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:55, skipping insertion in model container [2023-11-26 12:05:55,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:55" (3/3) ... [2023-11-26 12:05:55,406 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-21.i [2023-11-26 12:05:55,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:55,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:05:55,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:55,535 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;@1c390763, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:55,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:05:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 218 states have (on average 1.6605504587155964) internal successors, (362), 219 states have internal predecessors, (362), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-26 12:05:55,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:05:55,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:55,594 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:55,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:05:55,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash 335338095, now seen corresponding path program 1 times [2023-11-26 12:05:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:55,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335749491] [2023-11-26 12:05:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:56,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:56,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335749491] [2023-11-26 12:05:56,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:05:56,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664099602] [2023-11-26 12:05:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:56,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:56,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:56,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:56,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:05:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:56,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:05:56,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 21218 trivial. 0 not checked. [2023-11-26 12:05:56,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:05:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664099602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:56,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:56,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:05:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785849640] [2023-11-26 12:05:56,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:56,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:05:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:05:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:05:56,923 INFO L87 Difference]: Start difference. First operand has 325 states, 218 states have (on average 1.6605504587155964) internal successors, (362), 219 states have internal predecessors, (362), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-26 12:05:57,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:57,060 INFO L93 Difference]: Finished difference Result 647 states and 1242 transitions. [2023-11-26 12:05:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:05:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) Word has length 665 [2023-11-26 12:05:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:57,085 INFO L225 Difference]: With dead ends: 647 [2023-11-26 12:05:57,089 INFO L226 Difference]: Without dead ends: 323 [2023-11-26 12:05:57,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 664 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 12:05:57,106 INFO L413 NwaCegarLoop]: 562 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, 562 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 12:05:57,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 562 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:57,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-26 12:05:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-11-26 12:05:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 217 states have (on average 1.6451612903225807) internal successors, (357), 217 states have internal predecessors, (357), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-11-26 12:05:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 565 transitions. [2023-11-26 12:05:57,215 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 565 transitions. Word has length 665 [2023-11-26 12:05:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:57,216 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 565 transitions. [2023-11-26 12:05:57,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (104), 2 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 2 states have call successors, (104) [2023-11-26 12:05:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 565 transitions. [2023-11-26 12:05:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:05:57,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:57,241 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:57,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:57,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:57,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:05:57,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 742405155, now seen corresponding path program 1 times [2023-11-26 12:05:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687373039] [2023-11-26 12:05:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:57,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:05:57,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845468847] [2023-11-26 12:05:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:57,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:57,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:57,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:05:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:58,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:05:58,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:05:59,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:05:59,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:59,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687373039] [2023-11-26 12:05:59,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:05:59,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845468847] [2023-11-26 12:05:59,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845468847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:59,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:59,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:05:59,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080912783] [2023-11-26 12:05:59,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:59,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:05:59,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:05:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:05:59,228 INFO L87 Difference]: Start difference. First operand 323 states and 565 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:05:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:59,687 INFO L93 Difference]: Finished difference Result 1163 states and 2043 transitions. [2023-11-26 12:05:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:05:59,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:05:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:59,700 INFO L225 Difference]: With dead ends: 1163 [2023-11-26 12:05:59,700 INFO L226 Difference]: Without dead ends: 841 [2023-11-26 12:05:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 12:05:59,704 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 815 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:59,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1934 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:05:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-11-26 12:05:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 836. [2023-11-26 12:05:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 588 states have (on average 1.6751700680272108) internal successors, (985), 589 states have internal predecessors, (985), 244 states have call successors, (244), 3 states have call predecessors, (244), 3 states have return successors, (244), 243 states have call predecessors, (244), 244 states have call successors, (244) [2023-11-26 12:05:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1473 transitions. [2023-11-26 12:05:59,892 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1473 transitions. Word has length 665 [2023-11-26 12:05:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:59,895 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1473 transitions. [2023-11-26 12:05:59,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:05:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1473 transitions. [2023-11-26 12:05:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:05:59,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:59,905 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:59,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:00,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 12:06:00,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:00,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1581438817, now seen corresponding path program 1 times [2023-11-26 12:06:00,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:00,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873658213] [2023-11-26 12:06:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:00,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:00,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484986954] [2023-11-26 12:06:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:00,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:00,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:00,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:06:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:00,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:06:00,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:00,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:00,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873658213] [2023-11-26 12:06:00,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484986954] [2023-11-26 12:06:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484986954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:06:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469572707] [2023-11-26 12:06:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:06:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:06:00,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:06:00,940 INFO L87 Difference]: Start difference. First operand 836 states and 1473 transitions. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:01,710 INFO L93 Difference]: Finished difference Result 2778 states and 4926 transitions. [2023-11-26 12:06:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:06:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:06:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:01,793 INFO L225 Difference]: With dead ends: 2778 [2023-11-26 12:06:01,793 INFO L226 Difference]: Without dead ends: 1943 [2023-11-26 12:06:01,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:06:01,798 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 617 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:01,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 3559 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:06:01,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-11-26 12:06:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1933. [2023-11-26 12:06:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1484 states have (on average 1.7243935309973046) internal successors, (2559), 1491 states have internal predecessors, (2559), 439 states have call successors, (439), 9 states have call predecessors, (439), 9 states have return successors, (439), 432 states have call predecessors, (439), 439 states have call successors, (439) [2023-11-26 12:06:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3437 transitions. [2023-11-26 12:06:02,018 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3437 transitions. Word has length 665 [2023-11-26 12:06:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:02,020 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 3437 transitions. [2023-11-26 12:06:02,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:02,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3437 transitions. [2023-11-26 12:06:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:06:02,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:02,030 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:02,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:02,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:02,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:02,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1658339615, now seen corresponding path program 1 times [2023-11-26 12:06:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014508997] [2023-11-26 12:06:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:02,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:02,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:02,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399445099] [2023-11-26 12:06:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:02,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:02,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:02,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:02,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:06:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:02,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:02,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:02,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014508997] [2023-11-26 12:06:02,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399445099] [2023-11-26 12:06:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399445099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:02,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:02,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963273025] [2023-11-26 12:06:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:02,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:02,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:02,875 INFO L87 Difference]: Start difference. First operand 1933 states and 3437 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:03,050 INFO L93 Difference]: Finished difference Result 4904 states and 8728 transitions. [2023-11-26 12:06:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:06:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:03,075 INFO L225 Difference]: With dead ends: 4904 [2023-11-26 12:06:03,075 INFO L226 Difference]: Without dead ends: 2972 [2023-11-26 12:06:03,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 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 12:06:03,083 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 305 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:03,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1325 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2023-11-26 12:06:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2507. [2023-11-26 12:06:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 1962 states have (on average 1.7339449541284404) internal successors, (3402), 1972 states have internal predecessors, (3402), 532 states have call successors, (532), 12 states have call predecessors, (532), 12 states have return successors, (532), 522 states have call predecessors, (532), 532 states have call successors, (532) [2023-11-26 12:06:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 4466 transitions. [2023-11-26 12:06:03,357 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 4466 transitions. Word has length 665 [2023-11-26 12:06:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:03,359 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 4466 transitions. [2023-11-26 12:06:03,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 4466 transitions. [2023-11-26 12:06:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:06:03,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:03,371 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:03,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:03,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:03,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:03,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash 523600739, now seen corresponding path program 1 times [2023-11-26 12:06:03,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:03,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094115309] [2023-11-26 12:06:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:03,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:03,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327973469] [2023-11-26 12:06:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:03,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:03,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:03,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:03,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:06:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:04,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:04,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:05,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:05,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094115309] [2023-11-26 12:06:05,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327973469] [2023-11-26 12:06:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327973469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:05,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537109325] [2023-11-26 12:06:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:05,331 INFO L87 Difference]: Start difference. First operand 2507 states and 4466 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:05,673 INFO L93 Difference]: Finished difference Result 7531 states and 13420 transitions. [2023-11-26 12:06:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:05,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:06:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:05,715 INFO L225 Difference]: With dead ends: 7531 [2023-11-26 12:06:05,715 INFO L226 Difference]: Without dead ends: 5025 [2023-11-26 12:06:05,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 12:06:05,727 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 243 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:05,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1661 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2023-11-26 12:06:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 4975. [2023-11-26 12:06:06,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4975 states, 3886 states have (on average 1.725681935151827) internal successors, (6706), 3906 states have internal predecessors, (6706), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-26 12:06:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 8834 transitions. [2023-11-26 12:06:06,320 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 8834 transitions. Word has length 665 [2023-11-26 12:06:06,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:06,322 INFO L495 AbstractCegarLoop]: Abstraction has 4975 states and 8834 transitions. [2023-11-26 12:06:06,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:06,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 8834 transitions. [2023-11-26 12:06:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:06:06,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:06,335 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:06,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:06,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:06,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:06,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:06,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1182122595, now seen corresponding path program 1 times [2023-11-26 12:06:06,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:06,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25072618] [2023-11-26 12:06:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:06,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:06,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:06,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231904583] [2023-11-26 12:06:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:06,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:06,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:06,643 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:06,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:06:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:07,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:07,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:07,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:07,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25072618] [2023-11-26 12:06:07,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231904583] [2023-11-26 12:06:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231904583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:07,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:07,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922079153] [2023-11-26 12:06:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:07,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:07,169 INFO L87 Difference]: Start difference. First operand 4975 states and 8834 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:07,650 INFO L93 Difference]: Finished difference Result 12731 states and 22258 transitions. [2023-11-26 12:06:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:06:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:07,711 INFO L225 Difference]: With dead ends: 12731 [2023-11-26 12:06:07,711 INFO L226 Difference]: Without dead ends: 7757 [2023-11-26 12:06:07,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 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 12:06:07,731 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 387 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:07,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1146 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7757 states. [2023-11-26 12:06:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7757 to 4999. [2023-11-26 12:06:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 3910 states have (on average 1.721227621483376) internal successors, (6730), 3930 states have internal predecessors, (6730), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-26 12:06:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 8858 transitions. [2023-11-26 12:06:08,629 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 8858 transitions. Word has length 665 [2023-11-26 12:06:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:08,630 INFO L495 AbstractCegarLoop]: Abstraction has 4999 states and 8858 transitions. [2023-11-26 12:06:08,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 8858 transitions. [2023-11-26 12:06:08,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:06:08,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:08,649 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:08,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:08,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:08,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:08,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash -812022111, now seen corresponding path program 1 times [2023-11-26 12:06:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7357991] [2023-11-26 12:06:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:08,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:08,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922869840] [2023-11-26 12:06:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:08,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:08,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:08,962 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:08,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:06:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:09,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:09,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:09,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7357991] [2023-11-26 12:06:09,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922869840] [2023-11-26 12:06:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922869840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:09,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:09,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655139464] [2023-11-26 12:06:09,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:09,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:09,513 INFO L87 Difference]: Start difference. First operand 4999 states and 8858 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:10,167 INFO L93 Difference]: Finished difference Result 14935 states and 26452 transitions. [2023-11-26 12:06:10,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:06:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:10,240 INFO L225 Difference]: With dead ends: 14935 [2023-11-26 12:06:10,240 INFO L226 Difference]: Without dead ends: 9937 [2023-11-26 12:06:10,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 663 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 12:06:10,257 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 553 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:10,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1636 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9937 states. [2023-11-26 12:06:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9937 to 9935. [2023-11-26 12:06:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 7758 states have (on average 1.7107501933488012) internal successors, (13272), 7798 states have internal predecessors, (13272), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-11-26 12:06:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 17528 transitions. [2023-11-26 12:06:11,485 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 17528 transitions. Word has length 665 [2023-11-26 12:06:11,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:11,486 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 17528 transitions. [2023-11-26 12:06:11,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:11,487 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 17528 transitions. [2023-11-26 12:06:11,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-11-26 12:06:11,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:11,505 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:11,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:11,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:11,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:11,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash 922082339, now seen corresponding path program 1 times [2023-11-26 12:06:11,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:11,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826607459] [2023-11-26 12:06:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:11,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369073164] [2023-11-26 12:06:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:11,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:11,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:11,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:11,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:06:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:12,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:12,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:12,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:12,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826607459] [2023-11-26 12:06:12,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369073164] [2023-11-26 12:06:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369073164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:12,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:06:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916553862] [2023-11-26 12:06:12,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:12,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:12,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:12,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:06:12,318 INFO L87 Difference]: Start difference. First operand 9935 states and 17528 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:12,770 INFO L93 Difference]: Finished difference Result 14873 states and 26265 transitions. [2023-11-26 12:06:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:12,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 665 [2023-11-26 12:06:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:12,792 INFO L225 Difference]: With dead ends: 14873 [2023-11-26 12:06:12,793 INFO L226 Difference]: Without dead ends: 4939 [2023-11-26 12:06:12,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 12:06:12,819 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 553 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:12,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1085 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2023-11-26 12:06:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4939. [2023-11-26 12:06:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 3850 states have (on average 1.6919480519480519) internal successors, (6514), 3870 states have internal predecessors, (6514), 1064 states have call successors, (1064), 24 states have call predecessors, (1064), 24 states have return successors, (1064), 1044 states have call predecessors, (1064), 1064 states have call successors, (1064) [2023-11-26 12:06:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 8642 transitions. [2023-11-26 12:06:13,504 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 8642 transitions. Word has length 665 [2023-11-26 12:06:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:13,506 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 8642 transitions. [2023-11-26 12:06:13,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 8642 transitions. [2023-11-26 12:06:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-26 12:06:13,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:13,524 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:13,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:13,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:13,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:13,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2057842162, now seen corresponding path program 1 times [2023-11-26 12:06:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:13,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896189827] [2023-11-26 12:06:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:13,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350853735] [2023-11-26 12:06:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:13,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:13,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:13,830 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:13,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:06:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:14,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:14,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:14,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:14,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896189827] [2023-11-26 12:06:14,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350853735] [2023-11-26 12:06:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350853735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:14,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:14,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908013035] [2023-11-26 12:06:14,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:14,457 INFO L87 Difference]: Start difference. First operand 4939 states and 8642 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:15,022 INFO L93 Difference]: Finished difference Result 14815 states and 25924 transitions. [2023-11-26 12:06:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-26 12:06:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:15,105 INFO L225 Difference]: With dead ends: 14815 [2023-11-26 12:06:15,105 INFO L226 Difference]: Without dead ends: 9877 [2023-11-26 12:06:15,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 12:06:15,144 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 538 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:15,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1137 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9877 states. [2023-11-26 12:06:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9877 to 9875. [2023-11-26 12:06:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9875 states, 7698 states have (on average 1.6858924395947) internal successors, (12978), 7738 states have internal predecessors, (12978), 2128 states have call successors, (2128), 48 states have call predecessors, (2128), 48 states have return successors, (2128), 2088 states have call predecessors, (2128), 2128 states have call successors, (2128) [2023-11-26 12:06:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9875 states to 9875 states and 17234 transitions. [2023-11-26 12:06:16,283 INFO L78 Accepts]: Start accepts. Automaton has 9875 states and 17234 transitions. Word has length 667 [2023-11-26 12:06:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:16,285 INFO L495 AbstractCegarLoop]: Abstraction has 9875 states and 17234 transitions. [2023-11-26 12:06:16,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9875 states and 17234 transitions. [2023-11-26 12:06:16,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-26 12:06:16,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:16,305 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:16,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:16,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:16,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1339731856, now seen corresponding path program 1 times [2023-11-26 12:06:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:16,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864821995] [2023-11-26 12:06:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:16,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657094264] [2023-11-26 12:06:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:16,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:16,598 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:16,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:06:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:17,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:17,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:17,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864821995] [2023-11-26 12:06:17,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657094264] [2023-11-26 12:06:17,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657094264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:17,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:17,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012737332] [2023-11-26 12:06:17,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:17,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:17,248 INFO L87 Difference]: Start difference. First operand 9875 states and 17234 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:18,129 INFO L93 Difference]: Finished difference Result 25319 states and 44272 transitions. [2023-11-26 12:06:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:18,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-26 12:06:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:18,191 INFO L225 Difference]: With dead ends: 25319 [2023-11-26 12:06:18,191 INFO L226 Difference]: Without dead ends: 15445 [2023-11-26 12:06:18,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 12:06:18,214 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 521 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:18,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1153 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15445 states. [2023-11-26 12:06:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15445 to 15443. [2023-11-26 12:06:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 12178 states have (on average 1.684184595171621) internal successors, (20510), 12238 states have internal predecessors, (20510), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-26 12:06:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 26894 transitions. [2023-11-26 12:06:20,353 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 26894 transitions. Word has length 667 [2023-11-26 12:06:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:20,355 INFO L495 AbstractCegarLoop]: Abstraction has 15443 states and 26894 transitions. [2023-11-26 12:06:20,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 26894 transitions. [2023-11-26 12:06:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-26 12:06:20,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:20,376 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:20,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:20,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:06:20,585 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:20,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1574016148, now seen corresponding path program 1 times [2023-11-26 12:06:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:20,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638026199] [2023-11-26 12:06:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:20,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730798423] [2023-11-26 12:06:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:20,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:20,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:20,653 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:20,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:06:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:21,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:21,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:21,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638026199] [2023-11-26 12:06:21,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730798423] [2023-11-26 12:06:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730798423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984707699] [2023-11-26 12:06:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:21,166 INFO L87 Difference]: Start difference. First operand 15443 states and 26894 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:22,003 INFO L93 Difference]: Finished difference Result 30885 states and 53787 transitions. [2023-11-26 12:06:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:22,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-26 12:06:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:22,052 INFO L225 Difference]: With dead ends: 30885 [2023-11-26 12:06:22,052 INFO L226 Difference]: Without dead ends: 15443 [2023-11-26 12:06:22,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 12:06:22,080 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 534 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:22,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 548 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15443 states. [2023-11-26 12:06:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15443 to 15443. [2023-11-26 12:06:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15443 states, 12178 states have (on average 1.672359993430777) internal successors, (20366), 12238 states have internal predecessors, (20366), 3192 states have call successors, (3192), 72 states have call predecessors, (3192), 72 states have return successors, (3192), 3132 states have call predecessors, (3192), 3192 states have call successors, (3192) [2023-11-26 12:06:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15443 states to 15443 states and 26750 transitions. [2023-11-26 12:06:23,898 INFO L78 Accepts]: Start accepts. Automaton has 15443 states and 26750 transitions. Word has length 667 [2023-11-26 12:06:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:23,900 INFO L495 AbstractCegarLoop]: Abstraction has 15443 states and 26750 transitions. [2023-11-26 12:06:23,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15443 states and 26750 transitions. [2023-11-26 12:06:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-26 12:06:23,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:23,919 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:23,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 12:06:24,128 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:24,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1792870866, now seen corresponding path program 1 times [2023-11-26 12:06:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:24,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578075354] [2023-11-26 12:06:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:24,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:24,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:24,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156860231] [2023-11-26 12:06:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:24,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:24,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:24,203 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:24,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:06:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:24,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:06:24,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:24,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578075354] [2023-11-26 12:06:24,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156860231] [2023-11-26 12:06:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156860231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:06:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543875564] [2023-11-26 12:06:24,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:24,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:24,741 INFO L87 Difference]: Start difference. First operand 15443 states and 26750 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:26,385 INFO L93 Difference]: Finished difference Result 38537 states and 66070 transitions. [2023-11-26 12:06:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-26 12:06:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:26,468 INFO L225 Difference]: With dead ends: 38537 [2023-11-26 12:06:26,468 INFO L226 Difference]: Without dead ends: 23095 [2023-11-26 12:06:26,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 12:06:26,509 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 183 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:26,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1094 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:06:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23095 states. [2023-11-26 12:06:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23095 to 23081. [2023-11-26 12:06:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23081 states, 17296 states have (on average 1.616327474560592) internal successors, (27956), 17428 states have internal predecessors, (27956), 5640 states have call successors, (5640), 144 states have call predecessors, (5640), 144 states have return successors, (5640), 5508 states have call predecessors, (5640), 5640 states have call successors, (5640) [2023-11-26 12:06:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23081 states to 23081 states and 39236 transitions. [2023-11-26 12:06:29,134 INFO L78 Accepts]: Start accepts. Automaton has 23081 states and 39236 transitions. Word has length 667 [2023-11-26 12:06:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:29,136 INFO L495 AbstractCegarLoop]: Abstraction has 23081 states and 39236 transitions. [2023-11-26 12:06:29,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 23081 states and 39236 transitions. [2023-11-26 12:06:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2023-11-26 12:06:29,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:29,158 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:29,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:29,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 12:06:29,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:06:29,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1652322256, now seen corresponding path program 1 times [2023-11-26 12:06:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027438940] [2023-11-26 12:06:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:29,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:06:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396982610] [2023-11-26 12:06:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:29,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:29,438 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:29,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2982183b-28b1-4773-adcd-8ffa31b6b420/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:06:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:29,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:06:29,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-11-26 12:06:32,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:32,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027438940] [2023-11-26 12:06:32,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:06:32,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396982610] [2023-11-26 12:06:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396982610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:32,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:06:32,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:06:32,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476702114] [2023-11-26 12:06:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:06:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:06:32,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:06:32,500 INFO L87 Difference]: Start difference. First operand 23081 states and 39236 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-11-26 12:06:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:34,590 INFO L93 Difference]: Finished difference Result 55887 states and 95032 transitions. [2023-11-26 12:06:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:06:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 667 [2023-11-26 12:06:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:34,676 INFO L225 Difference]: With dead ends: 55887 [2023-11-26 12:06:34,676 INFO L226 Difference]: Without dead ends: 32807 [2023-11-26 12:06:34,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 665 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 12:06:34,728 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 226 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:34,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1122 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:06:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32807 states.